Blackworms were collected from an environment with an acidic pH, and the pulse rates were measured. Predict the outcome of the measurements. [2 pt] The pH of the nevironment would have no effect on pulse rate. The pulse rate would be increased to minimize the effects of acidosis. The pulse rate would be increased to minimize the effects of alkalosis. The pulse rate would be decreased to minimize the effects of acidosis
Answers
The pulse rate of blackworms collected from an environment with an acidic pH would be increased to minimize the effects of acidosis.
Acidosis occurs when there is an excess of acid in the body, which can lead to a decrease in blood pH. To compensate for this, the body increases pulse rate to improve blood circulation and oxygen delivery.
Blackworms are no exception to this mechanism and would experience an increase in pulse rate to counteract the acidic environment. It is important to note that the increase in pulse rate would not be enough to completely eliminate the effects of acidosis, but rather to minimize them.
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Related Questions
Sodium bicarbonate (baking soda), NaHCO,, can be purified by dissolving it in
hot water (60 °C), filtering to remove insoluble impurities, cooling to 0 °C to
precipitate solid Nalco, and then filtering to remove the solid, leaving
soluble impurities in solution. Any Nauco, that remains in solution is not?
recovered. The solubility of Nauco, in hot water of 60 °C is 164 g/L. Its
solubility in cold water of 0°C is 69 g/1. What is the percent yield of NaHCO,
when it is purified by this method?
Answers
Answer:
the other person is right
Explanation:
they're also wrong
Answer:
58% or 55.34%
Explanati
when collecting gases over water, the pressure of the pure gas being collected is called the
Answers
The pressure of a pure gas is referred to as the dry gas pressure when gases are being collected over water.
what is dry gas pressure?
It can be challenging to determine the mass of gases because of their low densities. It is usual practise to collect gas over water in order to measure the height of displaced water. To do this, insert a tube into an upside-down bottle whose opening is submerged in a bigger container of water. Dalton's Law must be applied to take water vapor into account when estimating the volume of gas that was collected.
The height of the water displaced in the tube can be used to calculate the overall pressure inside the pneumatic trough device, which is used to collect a gas over water.
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1.1.2 Differentiate between a micro and macro mineral element,
Answers
Explanation:
Macro minerals are present at larger level in the animal body or required in large amount in the diet. Such as calcium, chlorine, magnesium, potassium, sulphur, and sulfur.Micro minerals are often referred to as trace minerals i.e; they are present at low levels in the body and required in smaller amounts in the animal diet. Such as zinc, iron, iodine, cobalt, copper, flurion, etc.A 8.5-liter sample of a gas has 1.2 mole of the gas. if 0.65 mole of the gas is added, what is the final volume of the gas? temperature and pressure remain constant. 13 liters 14 liters 18 liters 21 liters
Answers
13 liters is the correct answer
13 liters is the final volume of the gas when the temperature and pressure remain constant.
v1/n1 = v2/n2
where,
v1 = initial volume = 8.5 liter
n1= initial mole of gas = 1.2 mole
n2= final mole of gas = 1.2+0.65= 1.85 mole
v2= final volume = ?
8.5 L/1.2 mol = v2/1.85 mol
7 L x 1.85 mol = v2/1.85 mol x 1.85 mol
13 L = v2
v2= 13 liter
What is a mole?A mole is an SI unit used to measure significant numbers of subatomic particles, such as atoms, molecules, or smaller particles. Any substance has an Avogadro number of molecules in a mole. The value of the Avogadro number is 6.02214076 × \(10^{23}\).How much is a mole of gas?
22.4 L
At STP (Standard Temperature and Pressure = 0 °C, 1 atm), an ideal gas has a volume of 22.41 L/mol.
What makes something a mole?Chemists use the term "mole" because atoms, molecules, and other particles are all very small and require a large amount to even weigh them. A mole is a measurement of the number of particles present, not their mass.To learn more about mole of gas visit:
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Find the standard molar enthalpy for the reaction C(s) + ½ O2(g) → CO(g)
Answers
The standard molar enthalpy for the reaction C(s) + ½ O2(g) → CO(g) is -111KJ.
What exactly are molar enthalpy and enthalpy?Molar enthalpy is the amount of energy per mole. In light of this, the primary distinction between enthalpy and molar enthalpy is that the former refers to the total heat content of a thermodynamic system, whereas the latter refers to the total heat per mole of reactant in the system.
C(s) + O₂(g) → CO₂(g) ΔHO = -394 kJ ----(1)
CO₂(g) → CO(g) + 1/2O₂(g) ΔHO = +283 kJ -----(2)
Adding 1 & 2
C(s) + ½ O₂(g) → CO(g)
ΔHO = -394 kJ + 283 kJ
ΔHO = -111KJ.
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Complete question is " Find the standard molar enthalpy for the reaction C(s) + ½ 02(g) → CO(g)
Given that
C(s) + O2(g) → CO2(g) AHO = -394 kJ
CO2(g) → CO(g) + ¹/2O2(g) AHO = +283 kJ ".
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Part D: Bohr’s Atomic Model Question 1 Using what you can recall from this unit, write one or two short paragraphs describing Niels Bohr’s atomic model. If needed, you may search the Internet for descriptions of the model.
Answers
Answer:
The Bohr Model is a planetary model in which the negatively-charged electrons orbit a small, positively-charged nucleus similar to the planets orbiting the Sun (except that the orbits are not planar). The gravitational force of the solar system is mathematically akin to the Coulomb (electrical) force between the positively-charged nucleus and the negatively-charged electrons.
Main Points of the Bohr Model
Electrons orbit the nucleus in orbits that have a set size and energy.
The energy of the orbit is related to its size. The lowest energy is found in the smallest orbit.
Radiation is absorbed or emitted when an electron moves from one orbit to another.
Have a great day friend! :D
A small positive charges nucleus is encircled by revolving negatively charged electrons in fixed orbits, according to the Bohr Atomic model.
What are the drawbacks of Bohr’s Atomic Model?The atom is basically depicted in the Bohr model as a central nucleus containing protons along with neutrons, with electrons in circular orbitals at various distances from the nucleus.
These orbits combine to form electron shells or energy levels, which allow you to see how many electrons are in each shell.
He concluded that electrons have more energy when they are located away from the nucleus, whereas electrons have less energy when they are located near the nucleus.
He was unable to explain the specifics of the Hydrogen and Helium atomic spectrums.
He did not explain how spectral lines split in the presence of a magnetic field. He did not explain the intensity of spectral lines.
Thus, these can be concluded regarding the Bohor's atomic model.
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For benzene (C_6H_6), AE = 30 and NE = 38. Look up the structure of benzene in your textbook. Explain how the eight-electron deficiency is eliminated by the structure of the molecule.
Answers
For benzene (C_6H_6), AE = 30 and NE = 38. The structure of benzene can be represented as a hexagon with alternating double and single bonds as shown below: This structure allows for the eight-electron deficiency to be eliminated. Each carbon atom in the benzene ring forms three covalent bonds to other atoms in the ring, satisfying the octet rule. The double bonds between the carbon atoms in the ring each provide two electrons, while the single bonds provide one electron, allowing for the deficiency to be filled.
Benzene is an organic compound with the chemical formula C₆H₆. The benzene molecule is composed of six carbon atoms bonded in a ring, with one hydrogen atom attached to each carbon atom.
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A precipitate is formed when the two solutions, barium nitrate, Ba(NO3)2, and phosphoric acid, H3PO4, are
mixed. Identify the correct products for this reaction.
A)
BaHa & NPO4
B)
BazN2 & HNO3
Baz(PO4)2 & NO2
D)
Baz(PO4)2 & HNO3
Answers
d. Ba₃(PO₄)₂(s)+6HNO₃(aq)
Further explanationDouble-Replacement reactions. Happens if there is an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product
To predict whether this reaction can occur or not is one of them, the precipitation reaction. A precipitation reaction occurs if two ionic compounds which are dissolved reacted to produce one of the products of the ion compound does not dissolve. Formation of these precipitating compounds that cause reactions can occur
Because A precipitate is formed, then compounds of CO₃²⁻ and PO₄³⁻ except for Compounds of Li +, Na +, K +, Rb +, Cs +, and NH₄ + are generally included in the insoluble compound
So the reaction :
3Ba(NO₃)₂(aq)+2H₃PO₄(aq)⇒Ba₃(PO₄)₂(s)+6HNO₃(aq)
A precipitate is formed ⇒ Ba₃(PO₄)₂
how many Oxygen atoms are in 3.15 mol of SnO2
Answers
Answer: 3.7926x1024 O atoms
Some of the brine is encapsulated within ice crystals, but most is trapped in the spaces between neighboring crystals. When air temperature falls below 0°C, the brine migrates downward, toward the higher water temperatures below. Eventually, the high-density brine drains into the water beneath the ice. In the process, the sea ice freshens while the salinity of the underlying water. and becomes
a increases less dense
b
increases
more dense
c. decreases less dense
d. decreases
more dense
Answers
The high-density brine drains into the water beneath the ice and in the process, the sea ice freshens while the salinity of the underlying water decreases, becoming less dense (Option C).
Sea ice is usually less salty than the ocean water it freezes from. During the process of ice formation, salt in the ocean water is expelled from the ice as it grows; most of the salt is ejected into the ocean but some remain trapped inside pockets of brine within the ice. When the air temperature falls below the freezing point of seawater (usually around -1.8 °C), water molecules start to form ice crystals, which grow and aggregate into a solid sheet of ice.
During this process, the salt rejected by the growing ice also accumulates, causing the salinity of the remaining brine to increase. Some of the brine is encapsulated within ice crystals, but most are trapped in the spaces between neighboring crystals.
Thus, the correct option is C.
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3x10^23 molecules of water = _____ moles of water
Answer choices:
.55
.49
1
2.01
Answers
To determine the number of moles of water in 3x10^23 molecules of water, we first need to know the Avogadro's number. Avogadro's number is the number of particles (molecules or atoms) in one mole of a substance. This value is approximately 6.02x10^23 particles per mole.
The Using this information, we can calculate the number of moles of water by dividing the number of molecules of water by Avogadro's number. 3x10^23 molecules of water / 6.02x10^23 molecules per mole = 0.498 moles of water.
Therefore, the closest answer choice is .49, which is the correct answer. This calculation shows that 3x10^23 molecules of water is equivalent to 0.498 moles of water. It is important to remember the relationship between moles and molecules in chemistry, as it is a fundamental concept that is used in many calculations and experiments.
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how does the value of g on the earth is related to the mass of the earth and its radius drive it
Answers
The relationship between acceleration due to gravity (g), mass of earth (M) and the radius of earth (R) is \(g = \frac{GM}{R^2} \).
What is weight of an object?
The weight of an object is determined as the product of the object's mass and acceleration due to gravity.
F = mg
The gravitational force on objects in the universeThe gravitational force between two objects in the universe is directly proportional to the product of mass of the objects and inversely proportional to the square of the distance between the objects.
\(F = \frac{GmM}{R^2} \)
\(mg = \frac{GmM}{R^2} \\\\ g = \frac{GM}{R^2} \)
where;
M is the mass of the earth
R is the radius of the earth
Thus, the relationship between acceleration due to gravity (g), mass of earth (M) and the radius of earth (R) is \(g = \frac{GM}{R^2} \).
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Jose completed an observational investigation to determine how many butterflies visited his garden each hour for one day Which option best explains why would Jose choose to complete an observational investigation?
He was able to count the number and type of butterflies that visited the garden,
He was observing the behavior of butterflies and could not control the variables
O He wanted to test how he could increase the number of butterflies visiting his garden
He was able to create a model of his garden showing the location of flowers and butterflies.
Answers
Answer:
He was able to count the number and type of butterflies that visited the garden,
Explanation:
When a rain forest is slashed and burned, the local concentration of carbon dioxide in the atmosphere increases. This is primarily due to.
Answers
The local concentration of carbon dioxide in the atmosphere increases when rainforest is slashed and burned because there is less vegetation to use CO2 for photosynthesis.
WHAT IS PHOTOSYNTHESIS:Photosynthesis is the process whereby green plants obtain their food (glucose) using energy from sunlight. Green plants in an ecosystem absorb carbon dioxide (CO2) from the atmosphere as one of the reactants of photosynthesis.Therefore, this means that the local concentration of carbon dioxide in the atmosphere increases when rainforest is slashed and burned because there is less vegetation to use CO2 for photosynthesis.
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1N₂ +10₂2 NO
NEN
A
In the reaction above, 1,443 kJ/mol of energy was absorbed to break the bonds of N2 and 02. 1,260 kJ/mol of energy was released when the N=O bonds in NO were formed. Use
the formula above to calculate the total bond energy for the reaction. Use the value of the total bond energy for the reaction to decide if the reaction is endothermic or exothermic.
Ο Α.
+ O=O -
Total Bond Energy for Reaction=
Total Bond Energy of Reactants-Total Bond Energy of Products
OB
N=O
N=O
The total bond energy of the reaction is + 183 kJ/mol and the reaction is endothermic.
OD
The total bond energy of the reaction is + 183 kJ/mol and the reaction is exothermic.
O C The total bond energy of the reaction is + 2,703 kJ/mol and the reaction is endothermic.
The total bond energy of the reaction is + 2,703 kJ/mol and the reaction is exothermic.
Answers
The total bond energy of the reaction is - 183 kJ/mol and the reaction is exothermic.
The given reaction,
N₂ + O₂ → 2NO
Total bond energy ΔH of the reaction can be calculated by using the formula,
ΔH = Total bond energy of the reactants - Total bond energy of the products
Here the bonds between N₂ and O₂ are broken,
Energy of broken N₂ and O₂ bond = 1443 KJ/mol
The bonds formed are NO,
Energy of the formed NO bond = 1260 KJ/mol
Total bond Energy ΔH,
ΔH = 1260 - 1443 KJ/mol
ΔH = -183 KJ/mol
As we can see that the value of ΔH is negative. In thermodynamics, if the value total bond energy comes out to be negative then it means that the system is liberating heat and that is why the reaction is said to be exothermic.
So, the Total bond energy of the reaction is -183KJ/mol and the reaction is exothermic.
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9. Use dot and cross diagrams to represent the following compounds.
a. Sodium chloride (NaCl)
Answers
Answer:
I have attached the diagram
how to find boiling point given delta h and delta s
Answers
The boiling point of a substance can be found by using the equation: T = (delta h / delta s), where delta H is the enthalpy change and delta S is the entropy change.
To find the boiling point of a substance given the enthalpy change (delta h) and entropy change (delta s), we can use the equation:
delta G = delta H - T * delta S
Here, delta G represents the change in Gibbs free energy, T is the temperature in Kelvin, delta H is the enthalpy change, and delta S is the entropy change.
The boiling point is the temperature at which the Gibbs free energy change becomes zero, indicating that the substance is transitioning from a liquid to a gas. To find the boiling point, we rearrange the equation:
delta G = delta H - T * delta S
Solving for T:
T = (delta H / delta S)
By substituting the given values of delta H and delta S into the equation, we can calculate the boiling point of the substance.
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I need someones help
Answers
Answer:
y or z one of those two i think its z but im so sorry if im wrong if not z then try y also I learned this last year.
the energy required for the complete removal of 1 mol of electrons from 1 mole of gaseous atoms or ions is called energy. For a neutral element this energy is a measure of how easily the element forms an ion with a charge.
Answers
Answer: I believe you may have meant "ionization energy?" Yes, for a neutral element this is a measure of the energy required to remove a valence electron.
Explanation: See above.
By definition, The energy required for the complete removal of 1 mol of electrons from 1 mole of gaseous atoms or ions is called Ionization energy. For a neutral element this energy is a measure of how easily the element forms an ion with a charge.
The electrons are attracted to the nucleus and it is necessary to provide energy to start them.
Ionization energy is the energy required to remove an electron from a gaseous atom, isolated and in a ground state. The electrons in the last shell, which are the weakest attracted to the nucleus, are always lost. In this way the neutral atom becomes a gaseous cation (positively charged ion).
The further away the electron is from the nucleus, the easier it is to remove it, that is, the less energy is needed.
Finally:
The energy required for the complete removal of 1 mol of electrons from 1 mole of gaseous atoms or ions is called Ionization energy. For a neutral element this energy is a measure of how easily the element forms an ion with a charge.
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Answers
Answer:
The post-transition metals cluster to the lower left of this line. Metalloids: The metalloids are boron (B), silicon (Si), germanium (Ge), arsenic (As), antimony (Sb), tellurium (Te) and polonium (Po). They form the staircase that represents the gradual transition from metals to nonmetals.
Explanation: i googled it
The metal that is grouped with metalloids are
boron, silicon, germanium,arsenic, antimony, and tellurium.A metalloid is a type of element which possesses the characteristics of both the metals and the non-metals.
Metals are those elements that are good conductors of heat and electricity while non-metals are those elements that neither conducts heat nor electricity.
The characteristics of the metalloids listed above are:
They conduct heat only at higher temperatures. The metalloids that can conduct electricity are called semi-conductors.They are shiny like metals but brittle like non-metals.Therefore, since these elements share both the properties of metals and non-metals, they are called the metalloids.
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What is the mass in grams of 5.90 mol C3H18?
673 g
0.0512 g
19.4 g
389 g
3.55 x 1024
Answers
Answer:
319
Explanation:
The molecular mass of C3H18 can be found by adding up the molecular weights of carbon and hydrogen so, (12.01 x 3) For Carbon and (1.008x18) for hydrogen. You will find it is 54.174g/mol.
To find grams muliply g/mol by mols so 5.9 x 54.174= 319 i didnt see any errors with my math so maybe you clicked 8 by accident but i may just be wrong
Exothermic Reactions
___________ energy to the surroundings Electrochemical reaction: |------|
fill in the blanks
Endothermic Reactions
___________ energy from the surroundings
Examples:
Photosynthesis:---------------
Activating a cold pack starts a reaction that
absorbs heat.---------------
Answers
A camel eats 18.3 kg of Bermudagrass hay that is 14.7 %
CP on a dry matter basis. If the DM percentage of the hay is 83.4
%, how much protein did the camel consume?
Answers
The camel consumed approximately 2.24 kg of protein from the Bermudagrass hay.
To calculate the amount of protein the camel consumed, we need to consider the dry matter basis of the hay. Here's how you can calculate it:
Calculate the dry matter weight of the hay:
Dry Matter Weight = Total Weight of Hay × Dry Matter Percentage
Dry Matter Weight = 18.3 kg × (83.4/100)
Dry Matter Weight = 18.3 kg × 0.834
Dry Matter Weight = 15.2442 kg
Calculate the protein content in the dry matter;
Protein Content = Dry Matter Weight × Protein Percentage
Protein Content = 15.2442 kg × (14.7/100)
Protein Content = 15.2442 kg × 0.147
Protein Content = 2.2414194 kg
Therefore, the camel consumed approximately 2.24 kg of protein from the Bermudagrass hay.
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T/F: the step in any reaction sequence determines the rate law for the overall reaction. this step is called the rate- step.
Answers
The step in any reaction sequence that determines the rate law for the overall reaction is called the rate-determining step. TRUE.
This step is also known as the slowest step in the reaction sequence. The rate law for the overall reaction is determined by the reactants and the rate-determining step. Therefore, it is important to identify the rate-determining step in order to determine the rate law for the overall reaction.
True, the step in any reaction sequence that determines the rate law for the overall reaction is called the rate-determining step. This step has the slowest rate among all the steps in the reaction sequence and thus governs the overall rate of the reaction.
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Density is
A the same as the object's weight.
B the volume divided by the mass (D = v/m).
C the amount of matter that occupies a given amount of space.
D the same as the size of the object.
Answers
into both ends of a meter-long glass tube samples of gases are introduced simultaneously. one end receives hydrogen chloride gas (hcl) while the other end receives ammonia gas (nh3). when the gases meet in the tube, they react to form solid ammonium chloride (nh4cl). where in the tube does the nh4cl form?
Answers
Option (B) closer to the end where HCl was introduced is correct because, according to Graham's Law of Diffusion, The Rate of diffusion is indirectly proportional to 1/√(Molar. mass).
The ammonium chloride (NH₄Cl) will form primarily in the middle of the glass tube, where the two gases (NH₃ and HCl) are first able to react with one another. This is because the gases travel through the tube at different velocities, so the reaction will occur where the gases first meet.
As the reaction progresses, the ammonium chloride will continue to form until the reaction is complete and the tube is filled with the solid product.
The reaction of the two gases is reversible, meaning that the NH₄Cl can also break down back into NH₃ and HCl. However, as the gases continue to travel through the tube, the reaction rate of the NH₄Cl breaking down is much slower than the rate at which it is formed.
Therefore, the majority of the ammonium chloride will form in the middle of the tube where HCl is introduced.
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You have three elements, A, B, and C, with the following electronegativity values:
Scoi
A = 0.9
B = 3.0
C = 3.5
You react the elements to form the substances AB, AC, and BC. Answer the following questions:
What type of substance is AB? What types of bonds are present? Explain your answer.
What type of substance is AC? What types of bonds are present? Explain your answer.
What type of substance is BC? What types of bonds are present? Explain your answer.
If any of the substances are ionic compounds, which element is the cation and which is the anion?
Explain your answer.
Answers
AB is an ionic Compound , BC is covalent Compound , AC is an Ionic Compound.
What is Electronegativity ?It is the tendency of an atom in which molecule is usually attract towards the shared pair of electrons which generally is known as electronegativity. As we move across a period i.e from left to right. Here the nuclear charge increases and the atomic size decreases, hence the value of electronegativity increases across a period according to the modern periodic table.Atomic number increases as we move down the group.The nuclear charge also increases but it's effect increase in nuclear charge is overcome with the help of addition of one shell. the value of electronegativity decreases while moving down the group.Now,
A = 0.9
B = 3.0
C = 3.5
AB is an ionic compound. If the difference of electronegativity between two atoms is more than 1.7 , then they will form ionic compound. Here A is Cation and B is Anion .
Electronegativity difference between A and C = 3.5 - 0.9 = 2.6Hence AC is an ionic compound.
A is Cation and B is Anion .
Electronegativity difference between B and C = 3.5 - 3.30 = 0.5Hence BC is a covalent Compound.
Thus , from the above conclusion we can say that, AB is an ionic Compound , BC is covalent Compound , AC is an Ionic Compound.
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1. How many molecules of H,O are in 4.32 moles?
Answers
Answer:
dont know
Explanation:
I WILLL GIVE YOU BRAINLYESTTT PLEASE HELPPPP
Answers
Answer:
10.99s
Explanation:
Given parameters:
Speed of the fly = 9.1m/s
Distance flown = 100m
Unknown:
Time taken to fly this distance = ?
Solution:
Speed is distance divided by the time;
Mathematically;
Speed = \(\frac{distance}{time}\)
Time = \(\frac{distance}{speed }\)
Insert the parameters and solve;
Time = \(\frac{100}{9.1}\) = 10.99s
If we have a 0.86 m solution with 2.16 kg of solvent, how many moles of solute are present?
Answers
To determine the number of moles of solute in the given solution, we need to know the molar mass of the solute. Without that information, we cannot directly calculate the moles of solute.
However, To determine the number of moles of solute in the given solution, we need to know the molar mass of the solute. Without that information, we cannot directly calculate the moles of solute.
However, if we assume that the solute is a single substance, we can make an approximation by using the formula:
moles of solute = mass of solute / molar mass of solute
Since we know the mass of the solvent and the volume of the solution, we can indirectly calculate the mass of the solute.
Given:
Volume of solution = 0.86 m^3
Mass of solvent = 2.16 kg
We don't have the concentration or density information to directly determine the mass of the solute. Therefore, we need additional information, such as the molar mass of the solute, to calculate the moles of solute accurately.
e assume that the solute is a single substance, we can make an approximation by using the formula:
moles of solute = mass of solute / molar mass of solute
Since we know the mass of the solvent and the volume of the solution, we can indirectly calculate the mass of the solute.
Given:
Volume of solution = 0.86 m^3
Mass of solvent = 2.16 kg
We don't have the concentration or density information to directly determine the mass of the solute. Therefore, we need additional information, such as the molar mass of the solute, to calculate the moles of solute accurately.
To determine the number of moles of solute in the given solution, we need to know the molar mass of the solute. Without that information, we cannot directly calculate the moles of solute.
However, if we assume that the solute is a single substance, we can make an approximation by using the formula:
moles of solute = mass of solute / molar mass of solute
Since we know the mass of the solvent and the volume of the solution, we can indirectly calculate the mass of the solute.
Given:
Volume of solution = 0.86 m^3
Mass of solvent = 2.16 kg
We don't have the concentration or density information to directly determine the mass of the solute. Therefore, we need additional information, such as the molar mass of the solute, to calculate the moles of solute accurately.
Answer:
Explanation:
need the name of the element or compound
Moles of solute = Mass of solute (g) divided by Molar mass of solute (g/mol)
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