Answers
kinetic molecular is constant elastic collisions
Related Questions
Density of iron is 7.8 g/cc. How much would 10 cc of iron weigh?
Answers
Answer:
The answer is 78 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volumeFrom the question
volume = 10 cc
density = 7.8 g/cc
So we have
mass = 7.8 × 10
We have the final answer as
78 gHope this helps you
How many bonding electrons are in the Lewis structure of PCl₃?
5
6
4
2
Answers
Answer:
B.) 6
Explanation:
Attached below is the Lewis structure of PCl₃ . Since phosphorus (P) has 5 valence electrons and chlorine (Cl) has 7 valence electrons, there should be 26 valence electrons (5 + 7(3) = 26) in the Lewis structure.
Bonding electrons are the electrons present in the chemical bonds between two atoms.
There are 2 electrons shared in every single bond. Within PCl₃, there are 3 single bonds. As such, there are 6 bonding electrons in the Lewis structure of PCl₃.
7. What is the volume of the
composite
solid?
4 in.
3 in.
3 in.
Answers
Answer:
The volume of Component 1 is 36 cubic inches.
Explanation:
To calculate the volume of a composite solid, we need to determine the individual volumes of the different components and then add them together.
In this case, the composite solid consists of multiple components with the following dimensions:
Component 1:
Length: 4 inches
Width: 3 inches
Height: 3 inches
To find the volume of Component 1, we multiply the length, width, and height together:
Volume of Component 1 = Length x Width x Height = 4 in x 3 in x 3 in = 36 cubic inches
Therefore, the volume of Component 1 is 36 cubic inches.
Please provide the dimensions of the remaining components of the composite solid, and I will calculate the total volume by summing up the individual volumes.
I need it right now please
Answers
Answer: 16.01
Explanation:(16x.9963) +(20x.0037)
If the molecular mass of nitric acid is 63.01 g/mol and the density is 1.5129 g/mL, what volume (mL) of nitric acid do you need?
Answers
We need 41.65 mL of nitric acid to obtain one mole of nitric acid, assuming that given density is accurate.
What is nitric acid?Nitric acid is the inorganic compound with formula as HNO₃ and it is a highly corrosive mineral acid.
1 mole of nitric acid = 63.01 g
So, if we need 63.01 g of nitric acid, we can calculate the volume of nitric acid required using its density:
As density = mass/volume
So, volume = mass/density
volume = 63.01 g / 1.5129 g/mL = 41.65 mL
Therefore, we need 41.65 mL of nitric acid to obtain one mole of nitric acid, assuming the given density is accurate.
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explain the difference between static and current electricity
Answers
Answer:
Explanation:
The most significant difference between the static and current electricity is that in static electricity the charges are at rest and they are accumulating on the surface of the insulator. Whereas in current electricity the electrons are moving inside the conductor.
in static electricity the charges are at rest on the surface of an insulator but in current electricity the electrons are moving in the conductor
2)
MgCl2 + Li,CO, → Mgco, + 2 LICI
Answers
Answer:
double replacement
Explanation:
12. 5.6g of solid copper was heated with 476.2 J at room temperature (25°C). Given that
copper has a C of 0.38 J/g°C, what would its final temperature be?
Answers
Answer:
The final temperature of the copper would be 311.3°C.
I hope this helps you
Explain the importance of two organelles present in plants cell
Answers
Answer:
Plant cells contain two organelles that are essential for their functioning. These are the chloroplasts and the vacuoles. The chloroplasts are the organelles responsible for photosynthesis, which involves converting light energy from the sun into chemical energy in the form of glucose. Without chloroplasts, plants would not be able to produce their own food. The vacuoles are large organelles filled with fluid that serve to store nutrients and other materials. Vacuoles also help to maintain the turgor pressure of the cell, which is the pressure that helps to keep the cell rigid and prevents it from collapsing. Without vacuoles, plant cells would not be able to remain rigid and would collapse, leading to the death of the plant.
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What is the mass of pure sulfuric acid (H2SO4) required to make 20% and 150g of solution of H2SO4
Answers
30 g of pure sulfuric acid (H2SO4) is required to make 150 g of 20% solution of H2SO4.
To find the mass of pure sulfuric acid (H2SO4) required to make a 20% and 150g of solution of H2SO4, you first need to understand the concept of concentration.The concentration of a solution is the amount of solute dissolved in a given volume or mass of solvent. It is expressed as a percentage or as the number of moles per liter of solution.20% solution means that 20 grams of solute is present in 100 grams of solution or 20 grams of solute is dissolved in 80 grams of solvent (water in this case).So, for 150 g of solution, the mass of solute (H2SO4) can be calculated as follows:20% solution means 20 g H2SO4 in 100 g solution.So, in 1 g solution, the mass of H2SO4 is:20 g / 100 g = 0.2 g/g solution.So, in 150 g of solution, the mass of H2SO4 is:0.2 g/g solution x 150 g = 30 g.So, 30 g of H2SO4 is required to make 20% and 150g of solution of H2SO4.To find the mass of pure sulfuric acid (H2SO4) required to make the solution, you need to consider the molar mass of H2SO4. The molar mass of H2SO4 is:2(1.01 g/mol) + 32.07 g/mol + 4(16.00 g/mol) = 98.08 g/mol.So, to find the mass of pure sulfuric acid (H2SO4) required to make the solution, you need to use the formula:mass = moles x molar mass.To find the moles of H2SO4, you need to use the formula:moles = concentration x volume / molar mass.For the 20% solution, the concentration is 20 g/100 g solution or 0.2 g/g solution.The volume of the solution is not given, so we cannot calculate the number of moles of H2SO4 required.For the 150 g solution, the mass of H2SO4 required is 30 g.
So, the number of moles of H2SO4 required is:moles = mass / molar mass = 30 g / 98.08 g/mol = 0.305 mol.So, the mass of pure sulfuric acid (H2SO4) required to make the solution is : mass = moles x molar mass = 0.305 mol x 98.08 g/mol = 29.93 g.
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What is the final temperature after 840 Joules is absorbed by 10.0g of water at 25.0
C?
Answers
The final temperature of the water is: T_final = 45.0°C
We can use the formula for the specific heat capacity of the water to solve this problem:
q = mcΔT
First, we can calculate the initial energy of the water:
q = mcΔT
q = (10.0 g) (4.184 J/g°C) (25.0°C)
q = 1,046 J
Next, we can calculate the final temperature after absorbing 840 J:
q = mcΔT
840 J = (10.0 g) (4.184 J/g°C) (ΔT)
ΔT = 20.0°C
Therefore, the final temperature of the water is:
T_final = T_initial + ΔT
T_final = 25.0°C + 20.0°C
T_final = 45.0°C
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What new evidence led scientists to change their minds about the geocentric model?
Answers
Galileo disproved the Ptolemaic theory, sanctioned for centuries by the Church, which held the Earth to be the central and principal object in the universe, about which all celestial objects orbited.
The new evidence led scientists to change their minds about the geocentric model is that the Sun and stars move across the sky in the same direction everyday. They appear to be going around the Earth. However, Galileo observed moons which orbited Jupiter. This suggests that not everything orbits the Earth and that the geocentric model is not correct.
What is Geocentric Model?Geocentric model is any theory of the structure of the solar system (or the universe) in which Earth is assumed to be at the centre of it all.
This model is often named Ptolemaic model after its most famous supporter, the Greco-Roman astronomer Ptolemy.
The geocentric is often referred to as the Medieval view of the universe and it dominated thinking into the early modern age.
Therefore, The new evidence led scientists to change their minds about the geocentric model is that the Sun and stars move across the sky in the same direction everyday. They appear to be going around the Earth. However, Galileo observed moons which orbited Jupiter. This suggests that not everything orbits the Earth and that the geocentric model is not correct.
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Look at the diagram of a fuel cell below. A fuel cell with 2 vertical objects labeled A and B connected by an electrical wire through a circle with a M in it. There is an area between the two vertical objects labeled A, and substances flowing to, along, and away from the vertical objects and to the left and right. Which statement describes how electrons move if oxidation occurs on the left side of the cell and reduction occurs on the right side? Electrons move from left to right through Electrons move from right to left through A. Electrons move from left to right through M. Electrons move from right to left through M.
Answers
The electrons move from left to right through the circle labeled "M" to reach the cathode, where reduction takes place.
If oxidation occurs on the left side of the fuel cell and reduction occurs on the right side, the movement of electrons can be described as follows: Electrons move from left to right through the circle labeled "M."
In a fuel cell, the process of oxidation takes place at the anode (labeled A) where the fuel is oxidized, releasing electrons. These electrons then flow through the external electrical circuit, represented by the wire connecting objects A and B. The electrons reach the cathode (also labeled A) on the right side of the cell, where reduction occurs.The circle labeled "M" represents the membrane or electrolyte in the fuel cell. This membrane allows the transport of ions but blocks the movement of electrons. As a result, electrons cannot flow directly through the electrolyte but must travel through the external circuit.
This movement of electrons through the external circuit is what generates an electric current that can be used to power electrical devices or systems.
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The electronic configuration 1s2,2s2,2p6,3s2 belongs to which element?
Answers
The electronic configuration 1s2,2s2,2p6,3s2 belongs to Magnesium.
Electronic configuration depicts the filling of electrons in the subshell and predicts the properties of the elements.The electronic configuration has two electrons in the outermost shell which depicts the alkaline earth metal group.Checking from the periodic table we get the element as magnesium.The distribution of electrons in an element's atomic orbitals is described by the element's electron configuration. Atomic electron configurations are represented via a common notation in which all atomic subshells that contain electrons (with the number of electrons written in subscript)Uses for electron configurations include: figuring out an element's valency, predicting a set of components' qualities (elements with similar electron configurations tend to exhibit similar properties).It also helps in analyzing atomic spectrum data.To learn more about electronic configuration visit:
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A) What is the wavelength of electromagnetic radiation that has a frequency of 5.97 x 10MHz? (1 MHz = 1 x 10 Hz)
Answers
Answer:
rrgffffffffffrrrddhgf
Explanation:
trrdfgfxfff
chemistry homework helpA 100mL sode ash solution was prepared with 5.0g of sodium carbonate/ MW=106 g/mol what is the concentration in M of the solution? What is the concentration of sodium ions?
Answers
Answer: the concentration of the prepared solution is 0.47 M and the concentration of Na+ ions in this solution is 0.97 M.
Explanation:
The question requires us to calculate the molar concentration of a prepared sodium carbonate (Na2CO3) solution and the concentration of sodium ions (Na+) in this solution.
The following information was provided by the question:
mass of salt used = m = 5.0 g
volume of solution = V = 100 mL
molar mass of sodium carbonate = MM = 106 g/mol
We can calculate the molar concentration of the solution using the following equation:
\(M=\frac{n\text{ \lparen mol\rparen}}{V\text{ \lparen L\rparen}}\)where M is the molarity of the solution (in mol/L or M), n is the number of moles (in mol), and V is the volume of solution (in L).
Since the volume was given in mL, we need to convert it to L:
\(V=100\text{ mL}\times\frac{1\text{ L}}{1000\text{ mL}}=0.1L\)We also need to determine the number of moles of Na2CO3 in 5.0g of this salt:
106 g Na2CO3 ---------------- 1 mol Na2CO3
5.0 g Na2CO3 ----------------- x
Solving for x, we have that there are 0.047 moles of Na2CO3 in 5.0g of this salt.
Now, applying these values to the equation for molar concentration:
\(M=\frac{0.047mol}{0.1L}=0.47M\)Therefore, the concentration of the prepared solution is 0.47 M.
The concentration of Na+ ions can be obtained from the dissociation of Na2CO3:
\(Na_2CO_{3(aq)}\rightarrow2Na_{(aq)}^++CO_{3(aq)}^{2-}\)According to the dissociation equation, each mol of Na2CO3 produces 2 moles of Na+. Therefore, a 0.47 M Na2CO3 solution should contain 0.47 * 2 = 0.94 M Na+ ions.
The spoon's broken appearance is caused by light waves that are
A
Reflected by the glass and then absorbed the water
B
Refracted by the water
С
Absorbed by the metal spoon
D
Reflected by the metal spoon and the water
Answers
Answer:
its b
Explanation:
Percocet contains oxycodone at varying strengths. Every strength also contains 325
mg of oxycodone per tablet. If the dose is not to exceed 3.9 g of oxycodone
daily, what is the maximum number of Percocet tablets a patient can take daily?
Answers
12 tablets maximum number of Percocet tablets a patient can take daily
Percocet is a prescription medicine used to treat the symptoms of acute pain and moderate-to-severe pain percocet may be used alone or with other medications percocet belongs to a class of drugs called Analgesics, Opioid Combos every strength also contains 325 this is the weakest dose of Percocet and is what most doctors will start with to help avoid side effects like respiratory depression this dosage is also used to gradually reduce Percocet dosage after dependence has developed, and to limit withdrawal symptoms percocet is a pain reliever for moderate to severe symptom over dose of percocet show side effect on body thats why 12 tablets maximum number of Percocet tablets a patient can take daily.
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How much water has to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M?
Answers
Approximately 166.67 mL of water needs to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M.
To find the amount of water that needs to be evaporatedThe relationship between the initial and final concentrations and volumes must be taken into account.
Given: Initial concentration \((C^1) = 1 M Initial volume (V^1) = 250 mL\)
\((C^2) = 3 M final concentration\)
We can use the equation:
\(C^1 * V^1 = C^2 * V^2\)
Where:
\(V^2\)is the final volume of the solution
Rearranging the equation to solve for V2:
\(V^2 = (C^1 * V^1) / C^2\)
Substituting the given values:
\(V^2 = (1 M * 250 mL) / 3 M\)
\(V^2 = 250 mL / 3\)
\(V^2\) ≈ \(83.33 mL\)
To find the amount of water that needs to be evaporated, we subtract the final volume from the initial volume:
Amount of water to be evaporated = \(V^1 - V^2\)
Amount of water to be evaporated = 250 mL - 83.33 mL
Amount of water to be evaporated ≈ 166.67 mL
Therefore, approximately 166.67 mL of water needs to be evaporated from 250 mL of 1 M Ca(OH)2 to make it 3 M.
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Which locations are likely to have subatomic particles that are constantly in motion:
A) 1 and 2
B) 2 and 3
C) 1 and 3
D) 2 and 4
Answers
The answer is "2 and 4"
Location 2 and 4 are likely to have subatomic particles that are constantly in motion,thus the correct option is D.
In physics, a subatomic particle is a particle smaller than an atom.According to the Standard Model of particle physics, a subatomic particle can be either a composite particle, which is composed of other particles (for example, a proton, neutron, or meson), or an elementary particle, which is not composed of other particles Particle physics and nuclear physics study these particles and how they interact.
Experiments show that light could behave like a stream of particles (called photons) as well as exhibiting wave-like properties. This led to the concept of wave–particle duality to reflect that quantum-scale particles behave like both particles and waves; they are sometimes called wavicles to reflect this.
Thus, the correct option is D.
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What is the molarity of a solution which contains 58.5 g of NaCl dissolved in 0.25 L of solution
Answers
The molarity of the solution, which contains 58.5 g of NaCl dissolved in 0.25 L of solution, is approximately 4.004 M.
To calculate the molarity of a solution, we need to determine the number of moles of solute (NaCl) and then divide it by the volume of the solution in liters.
Given:
Mass of NaCl = 58.5 g
Volume of solution = 0.25 L
Step 1: Calculate the number of moles of NaCl.
To find the number of moles, we need to divide the mass of NaCl by its molar mass. The molar mass of NaCl is the sum of the atomic masses of sodium (Na) and chlorine (Cl).
Molar mass of NaCl = 22.99 g/mol (Na) + 35.45 g/mol (Cl) = 58.44 g/mol
Moles of NaCl = Mass of NaCl / Molar mass of NaCl
= 58.5 g / 58.44 g/mol
≈ 1.001 mol
Step 2: Calculate the molarity.
Molarity (M) is defined as moles of solute per liter of solution.
Molarity = Moles of solute / Volume of solution
= 1.001 mol / 0.25 L
≈ 4.004 M
Therefore, the molarity of the solution, which contains 58.5 g of NaCl dissolved in 0.25 L of solution, is approximately 4.004 M.
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Be sure to answer all parts.
Express the rate of reaction in terms of the change in concentration of each of the reactants and
products
Answers
The rate of reaction is
1.17*10^5 J/mol
What is the rate of reaction?By Arohenius equation, we have
\(.$$\log \left(k_2 k_1\right)=\frac{E_a}{2 \cdot 303 R}\left(\frac{T_2-T_1}{T_1 T_2}\right)$$Given, $k_1=4.85 \times 10^{-5} \mathrm{~L}$ mol.s$$T_1=195^{\circ} \mathrm{C}=(273+195) \mathrm{K}=468 \mathrm{~K}$$$$\begin{aligned}& k_2=8.80 \times 10^{-3} \frac{\mathrm{L}}{\text { mil.s}} \\& T_2=258^{\circ} \mathrm{C}=(273+258) \mathrm{k}=531 \mathrm{~K}\end{aligned}$$\)
\($$\begin{aligned}& \therefore \log \left(\frac{8.80 \times 10^{-3}}{4.85 \times 10^{-5}}\right)=\frac{E a}{2.303 R}\left(\frac{531.468}{488 \times 531}\right) \\& \Rightarrow \log (181.44)=\frac{E_a}{2.303 R}\left(\frac{63}{248,508}\right) \\& \Rightarrow E_a=\log (181.44) \times \frac{248508}{63} \times 2.303 \times 8.314 \\& =170,595.94 \mathrm{~J} / \mathrm{mal} \text {. } \\& =1.71 \times 10^5 \mathrm{~J} / \mathrm{mol} \text { (aru) } \\&\end{aligned}$$\)
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Indicate how the concentration of each species in the chemical equation will change to reestablish equilibrium after changing the concentration of the reactant or product. An up arrow indicates an increase in concentration, a down arrow indicates a decrease in concentration, and leaving it blank means there is no change in the concentration. after the concentration of Br₂ is decreased after the concentration of HBr is increased H₂(g) + Br₂(g) O 0 □ ↓ Answer Bank ↑ 2HBr(g) 0 □
Answers
The concentration of species in the reaction changes the reaction in the following ways: decrease carbon dioxide = forward direction of reaction.
The direction of the reaction can be assessed by the following. On increasing the concentration of the reactant the reaction processes in the forward direction. On increasing the concentration of product the reaction processes in the backward direction.
The given equilibrium is:
2CO(g) + O2(g) ↔ 2CO2(g)
increase CO = forward direction of reaction
increase oxygen = forward direction of reaction
decrease CO = no change in equilibrium as reaction not processes.
decrease oxygen = no change in equilibrium as reaction not processes.
increase carbon dioxide= reverse direction
decrease carbon dioxide = forward direction of reaction.
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What type of climate conditions are needed to form coal deposits.
Answers
Answer:
Subbituminous coal can form at temperatures as low as 35 to 80 °C (95 to 176 °F) while anthracite requires a temperature of at least 180 to 245 °C (356 to 473 °F).
Sub-types: Cannel coal
Child material class: Lignite
Explanation:
A tricycle and a truck is driving in the same street. The tricycle was able to move forward much faster than the truck. what law of motion is highly evident in this situation
a. Law of Inertia
b. Law of acceleration
c. Law of interaction
d. Law of interellation
Answers
A cat travels 240 meters in 30 seconds, and a sprinter travels 100 meters in 9.5 seconds. Which is traveling faster, the cat or the sprinter?
Sprinter
Cat
Answers
Answer:
The cat
Explanation:
1) You need to find how many meters per second each thing is sprinting, so you can divide the meters by seconds for each.
\(\frac{240}{30} = 8 m/s\\\frac{100}{9.5} = around 10.5 m/s\)
2) Per second, the sprinter is able to achieve 8 meters, while the cat can do around 10.5 meters. 10.5 is greater than 8, making the cat faster than the sprinter.
9. Which of the following is needed as a reactant for cellular
respiration?
A. Carbon dioxide
B. Oxygen
C. Water
D. Chlorophyll
Answers
oxygen is needed as a reactant for cellular respiration
What is cellular respiration ?
Cellular respiration can be defined as the process which occurs in every cells mainly mitochondria of plants and animals, it involve in the break down of sugars in the presence of oxygen and releases energy in the form of ATP.
The waste product of this process are carbon dioxide and water during exhalation process done by lungs, breathing and cellular respiration are related to each other.
At every step of cellular respiration energy is used in the form of ATP and carry out the normal function. It can aerobic and anaerobic respiration on the basis of use of oxygen.
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atomic number of sodium
Answers
What is the number of nitrogen molecules that reacted with excess hydrogen to make 2x10^10 molecules of ammonia
Answers
According to stoichiometry and mole concept,1×10¹⁰ molecules reacted with excess hydrogen to make 2 x 10¹⁰ molecules of ammonia.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is important while balancing chemical equations.
In the given example, as 1 molecule of nitrogen produces 2 molecules of ammonia
∴2 x 10¹⁰ molecules of ammonia will be produced when 2 x 10¹⁰×1/2=1×10¹⁰ molecules .
Thus, 1×10¹⁰ molecules reacted with excess hydrogen to make 2 x 10¹⁰ molecules of ammonia.
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When a sample of Mg(s) reacts completely with O2(g), the Mg(s) loses 5.0 moles of electrons. How many moles of electrons are gained by the O2(g)? *
Answers
Answer:
if magnesium looses five moles of electrons, oxygen will also gain five moles of electrons.!
Explanation:
Oxidation refers to the loss of electrons. Any specie that looses electrons in a redox reaction is said to be the reducing agent. Hence the reducing agent participates in the oxidation half equation. In this case, magnesium is the reducing agent.
Reduction has to do with the gain of electrons. The oxidizing agent participates in the reduction half equation. Hence the oxidizing agent is reduced in the redid reaction. The reducing agent in this case is the oxygen molecule.
Oxidation half equation;
Mg(s)-----> Mg^2+(aq) + 2e
Reduction half equation;
O2(g) + 2e ------> 2O^2-(aq)
From the balanced reaction equation, two moles of electrons is transferred.
Hence if magnesium looses five moles of electrons, oxygen will also gain five moles of electrons.