Answer:
3
Explanation:
From the table below we see that we can have three possible orbitals when l = 1. These are designated as p orbitals and have a sort of 8 shapes. Each of the p orbitals has a different orientation in three-dimensional space.
A battery contains two metals that have different tendencies to attract electrons. If one is lithium with an electron affinity of −3.05, and the other is zinc with an electron affinity of −0.76, describe how the electrons will flow. Then, describe how you could make this an even stronger battery.
This battery could be made stronger when we make lithium the anode and make zinc the cathode.
What is the electron affinity?We know that the term electron affinity has to do with the fact the a specie is able to attract electrons. Hence, the specie that can be able to attract electrons is said to be have a greater electron affinity.
If we look at the order of the reactivity of the metals, we can see that the lithium has more tendency to exist as a positive ion as such the electron affinity of the lithium atom is very negative and it does not attract electrons.
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Solid potassium chloride is obtained by the reaction of solid potassium and chlorine gas.
Write a balanced chemical equation for this reaction.
Answer:
2 K(s) + Cl₂ (g) --> 2 KCl(s)
Explanation:
Potassium will just be K
Chlorine gas is part of BrIClHOF, which are diatomic gasses. So Cl₂
Looking at the periodic table potassium K has an ion charge of +1 and chlorine Cl has an ion charge of -1, so in a balanced compound they will be written as KCl
Balancing the amounts of each will lead to 2 K(s) + Cl₂ (g) --> 2 KCl(s)
A child has a toy balloon with a volume of 1.80 liters. The temperature of the balloon when it was filled was 20° C and the pressure was 1.00 atm. If the child were to let go of the balloon and it rose 3 kilometers into the sky where the pressure is 0.667 atm and the temperature is -10° C, what would the new volume of the balloon be?
The new volume of the balloon when it rises 3 kilometers into the sky would be approximately 1.610 liters.
To determine the new volume of the balloon, we can use the combined gas law equation, which relates the initial and final conditions of temperature, pressure, and volume.
The combined gas law equation is given as:
(P1 * V1) / (T1) = (P2 * V2) / (T2)
Where:
P1 = Initial pressure (1.00 atm)
V1 = Initial volume (1.80 liters)
T1 = Initial temperature (20°C + 273.15 = 293.15 K)
P2 = Final pressure (0.667 atm)
T2 = Final temperature (-10°C + 273.15 = 263.15 K)
V2 = Final volume (unknown)
Substituting the given values into the equation, we can solve for V2:
(1.00 atm * 1.80 L) / (293.15 K) = (0.667 atm * V2) / (263.15 K)
Simplifying the equation and solving for V2:
(1.80 L * 263.15 K) / (293.15 K) = 0.667 atm * V2
V2 ≈ (1.80 L * 263.15 K) / (293.15 K * 0.667 atm)
V2 ≈ 1.610 L
Therefore, the new volume of the balloon when it rises 3 kilometers into the sky would be approximately 1.610 liters.
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Consider 5.00 L of a gas at 365 mmHg and 20. ∘C . If the container is compressed to 2.70 L and the temperature is increased to 33 ∘C , what is the new pressure, P2 , inside the container? Assume no change in the amount of gas inside the cylinder.
Consider 5.00 L of a gas at 365 mmHg and 20.∘C . If the container is compressed to 2.70 L and the temperature is increased to 33 °C, the new pressure, P2 , inside the container is 563.372 mm Hg.
What is ideal gas law ?The ideal gas law, also known as the general gas equation, is the state equation for a hypothetical ideal gas. Although it has several limitations, it is a good approximation of the behavior of many gases under many conditions.
Apply ideal gas law
P1V1/T1 = P2V2/T2
365 × 5 / 293 = P2 × 2.70 / (33+273)
P = 365 × 5 /293 /2.70 × (33+273)
P = 563.372 mm Hg
Thus, the new pressure, P2 , inside the container is 563.372 mm Hg.
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a. zoloft (sertraline) b. mellaril (thioridazine) c. thorazine (chlorpromazine) d. valium (diazepam)
Zoloft (sertraline) comes under Selective serotonin reuptake inhibitor (SSRI) antidepressants
Mellaril (thioridazine) comes under Typical antipsychotics
Thorazine (chlorpromazine)comes under Typical antipsychotics
Valium (diazepam)comes under Anti-anxiety agents
By raising serotonin levels in the brain, SSRIs alleviate depression. One of the chemical messengers, or neurotransmitters, that communicate between brain nerve cells is serotonin (neurons). Serotonin reabsorption (reuptake) into neurons is inhibited by SSRIs.
Typical antipsychotics can be used to treat conditions like extreme agitation or schizophrenia.
a medication used to alleviate anxiety symptoms such the fear, dread, unease, and tightness in the muscles that can happen when under stress. The majority of anti-anxiety medications prevent particular nervous system molecules from acting. Additionally known as anxiolytic and anxiolytic agent.
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Dipotassium phosphate is a buffer added to EMB that adjusts the pH to the proper starting level. What would be a possible consequence of adding buffers to raise the starting pH to 7.8?
A possible consequence of adding buffer, such as dipotassium phosphate, to raise the starting pH of a solution to 7.8 is the potential alteration of microbial growth patterns and selective inhibition of certain organisms.
Buffers are substances that resist changes in pH and help maintain the desired pH level in a solution. In the case of EMB (Eosin Methylene Blue) agar, which is commonly used for the selective isolation and differentiation of Gram-negative bacteria, the addition of a buffer to raise the starting pH to 7.8 could result in a higher alkaline environment.
This increase in pH may favor the growth of alkaliphilic or alkaline-tolerant microorganisms, while inhibiting the growth of acidophilic or acid-sensitive organisms. Some species of Gram-negative bacteria, which are the target organisms for isolation on EMB agar, may be negatively affected by the higher pH and show reduced growth or limited colony formation.
Additionally, altering the pH outside the optimal range for microbial growth can disrupt the delicate balance of the microbial community and potentially lead to the overgrowth or suppression of certain species. This can affect the accuracy of diagnostic tests, compromise the selective properties of the medium, and impact the identification of specific pathogens.
In conclusion, raising the starting pH to 7.8 by adding buffers to EMB agar may result in selective inhibition of certain organisms and alter the microbial growth patterns, potentially affecting the accuracy and reliability of the medium for its intended purpose. Careful consideration of the pH requirements and the specific goals of the microbial analysis should be taken into account when adjusting the pH using buffers.
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is it as critical for your tap water to be a good buffer as it is for the water at the nearest lake to be a good buffer?
It is as critical for your tap water to be a good buffer as it is for the water at the nearest lake to be a good buffer.
What is buffer?A buffer is a solution that resists changes in acidity and alkalinity. The pH of a buffer does not change easily hence it stabilizes a solution.
It is important to know that water in a lake ought to be buffered because of the survival of organisms in after that can not tolerate a sudden change in pH.
As such the bodies of living organism also need to maintain a delicate pH balance. Hence, it is as critical for your tap water to be a good buffer as it is for the water at the nearest lake to be a good buffer.
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Can you please help me out? this quiz is due right now.
Which information is revealed in a chemical formula?
F. full names of the elements and their atomic weight
G. symbols of elements and their proportional amount
H. names of elements in the compound and their atomic number
J. symbols of the elements and their relative densities
Answer:
G
Explanation:
Such as:
CO2 + H2O > C6H12O6 + O2 (photosynthesis)
Is air a mixture or pure substance
Answer:
pure substance
Explanation:
Solve for missing values using the ideal gas law formula:
1. 10°C, 5. 5 L, 2 mol, __ atm. What is the atm?
2. __ °C, 8. 3 L, 5 mol, 1. 8 atm. What is the temperature in celsius?
3. 12°C, 3. 4 L, __ mol, 1. 2 atm. What is the mole?
The ideal gas law formula is used to determine the missing values in questions. When dealing with problems that require solving for missing values using the ideal gas law formula, always ensure that all values are expressed in the correct units and temperature is converted to kelvin.
The ideal gas law formula is represented as PV = nRT, where P represents pressure, V represents volume, n represents the number of moles of gas, T represents the temperature in kelvin, and R represents the universal gas constant. Solve for missing values using the ideal gas law formula:1. 10°C, 5. 5 L, 2 mol, __ atm.The temperature must be converted to kelvin first: T(K) = T(°C) + 273.15K = 10°C + 273.15 = 283.15KPV = nRT
Rearrange the equation to isolate P: P = nRT / V
Substitute the given values:
P = (2 mol)(0.0821 L•atm/mol•K)(283.15K) / 5.5 L
: P = 8.28 atm
2. __ °C, 8. 3 L, 5 mol, 1. 8 atm.The equation PV = nRT can be rearranged to T = PV / nRThe temperature must be converted to kelvin first: T(K) = T(°C) + 273.15T = PV / nR
Substitute the given values: T = (1.8 atm)(8.3 L) / (5 mol)(0.0821 L•atm/mol•K)T(K) = T +
: T = 332 K or 59°C
The temperature must be converted to kelvin first:
T(K) = T(°C) + 273.15K
= 12°C + 273.15
= 285.15
KPV = nRT
Solve for n by rearranging the equation: n = PV / RT
Substitute the given values: n = (1.2 atm)(3.4 L) / (0.0821 L•atm/mol•K)(285.15K): n = 0.141 mol
The ideal gas law formula is used to determine the missing values in questions. When dealing with problems that require solving for missing values using the ideal gas law formula, always ensure that all values are expressed in the correct units and temperature is converted to kelvin.
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As the moon orbits the ______________, its gravitational pull is______________ on the side of the earth closest to the ______________.This ______________ force pulls on the water facing the moon,creating a ______________. The moon also ______________ on the solidearth, causing the water on the far side of earth to ______________as well. These bulges in the water are the ______________.The areas in between the close and far side of the earth which are not in ______________ with the moon experience ______________.
pls help i give brainlyest
Answer:
Earth
Strongest
Moon
Gravitational
Tide
Pulls
Bulge
Waves
Proximity
Low Tide
2n2 h4(g) + 2no2(g) ⇌ 3n2(g) + 4h2o (g)
Answer:(n2)^3 (h20)^4
(n2)^3 (h20)^2
Explanation:
mention gay-lussac's law of combining volumes
Answer:
When volume is kept constant (kept the same), Gay-Lussac's law states that the pressure of gas varies directly with the temperature of the gas. The equation would be \(\frac{P1}{T1}=\frac{P2}{T2}\), Where P is the pressure (in atm) and T is the temperature (in K°).
Explanation:
Answer:
When volume is kept constant (kept the same), Gay-Lussac's law states that the pressure of gas varies directly with the temperature of the gas. The equation would be , Where P is the pressure (in atm) and T is the temperature (in K°).
Explanation:
Name any two mixture that can be separated by this distillation
Answer:
Simple distillation is used to separate salt from seawater, to separate sugar from water.
Explanation:
suppose that 0.250 mol of methane, ch4(g) , is reacted with 0.400 mol of fluorine, f2(g) , forming cf4(g) and hf(g) as sole products. assuming that the reaction occurs at constant pressure, how much heat is released?
The heat released after the reaction is -184.79 kJ
The chemical reaction between methane and fluorine is
\( CH_{4}\) + 4\( F_{2}\) -> \( CF_{4}\) + 4HF, where reactants are methane and fluorine. The products are carbon tetrafluoride and hydrogen fluoride.
The limiting reactant is hydrogen fluoride. Number of moles = (0.440 × 4)/4, here 4 is the number of moles of hydrogen fluoride and fluorine
Performing multiplication and division
Number of moles = 0.440 moles of HF
Enthalpy of reaction = -1679.54 kJ
Heat released = (0.440 × -1679.54)/4
Performing multiplication and division to find the heat released
Heat released = -184.749 kJ
Thus, the heat released is -184.79 kJ
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Stickleback fish are collected from a lake in Alaska. 600 from the sample are spineless, which is a recessive trait in the fish. 80 of the fish collected have spines. Calculate:
Answer:
Frequency of spinal trait in the population = 0.11
Explanation:
Given:
Total spineless trait = 600
Number of spinal trait = 80
Find:
Frequency of spinal trait in the population
Computation:
Total population = Total spineless trait + Number of spinal trait
Total population = 600 + 80
Total population = 680
Frequency of spinal trait in the population = Number of spinal trait / Total population
Frequency of spinal trait in the population = 80 / 680
Frequency of spinal trait in the population = 0.11
How many compounds are found in 2.3 moles of Ca(NO3)2?
Answer:
For every 1 Ca(NO3)2 there are six (2 * NO3 or 2 * 3 O) oxygens. If you have 3 mole of Ca(NO3)2 then you have 18 mole of oxygen atoms (3*6).
Explanation:
separate this redox reaction into its balanced component half‑reactions. use the symbol e− for an electron. cl2 2cu⟶2cucl cl2 2cu⟶2cucl
The balanced redox reaction can be separated into two half-reactions: the oxidation half-reaction and the reduction half-reaction. Oxidation half-reaction: 2Cl^- → Cl2 + 2e^-, Reduction half-reaction: Cl2 + 2e^- → 2CuCl
In the oxidation half-reaction, chloride ions (Cl^-) are oxidized to form chlorine gas (Cl2) and release two electrons (2e^-). This represents the loss of electrons, which is characteristic of an oxidation process. In the reduction half-reaction, chlorine gas (Cl2) gains two electrons (2e^-) to form copper chloride (CuCl). This represents the gain of electrons, which is typical of a reduction process. When combined, the two half-reactions form the overall balanced redox reaction: 2Cl^- + Cl2 → 2CuCl.
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Which organelle of a prokaryotic cell contains genetic information?
cell membrane
ribosomes
nucleus
nucleoid
Answer:
The right option is the 4 one. nucleoid
Prokaryotic cells are simple cells that lack a definite nucleus and some membrane-bound organelles. Prokaryotic cells have a nucleoid region, which is an irregularly-shaped central region of the cell that contains the cell’s genetic information (DNA). Other organelles that can be found in prokaryotic cells include plasma membrane, cell wall, cytoplasm, and ribosomes.
Explanation:
Answer:
nucleoid
Explanation:
How many oxygen atoms are there in 3 molecules of CH3FO?
Answer: There should be 3.
Explanation:
The diagram shows movement of thermal energy
In which areas of the diagram does conduction occur?
W and X
X and Z
Y and Z
Z and W
Answer:
Y AND Z
HOPE IT HELPS THANK ME LATER.
Answer:
B. Y and Z
Explanation:
how could you get the crystals in a supersaturated solution back into the solution?
What is the constant movement
of water from the ground, to the
sky, and back again called?
A rain
B snow
C water cycle
D rain clouds
Answer:
C the water cycle
Explanation:
The water gets evaproated, then it becomes clouds and thn it makes precipitation! The correct answer is the water cycle!
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How many orbitals correspond to each of the following designations?
(a) 3p;
(b) 4p;
(c) 4p
;
(d) 6d;
(e) 5d;
(f) 5f;
(g) n = 5;
(h) 7s.
(a) The designation 3p corresponds to one orbital.
(b) The designation 4p corresponds to three orbitals.
(c) The designation 4p corresponds to three orbitals.
(d) The designation 6d corresponds to five orbitals.
(e) The designation 5d corresponds to five orbitals.
(f) The designation 5f corresponds to seven orbitals.
(g) The designation n = 5 corresponds to 50 orbitals.
(h) The designation 7s corresponds to one orbital.
(a) The designation 3p corresponds to one orbital. In the p sublevel, there is a single set of three orbitals: px, py, and pz. The designation "3p" specifies that we are referring to the p orbital within the third energy level.
(b) The designation 4p corresponds to three orbitals. Similar to (a), the p sublevel has three orbitals: 4px, 4py, and 4pz. The "4p" designation indicates that we are referring to the p orbitals within the fourth energy level.
(c) It seems that there was a repetition of the 4p designation in your list. So, again, the 4p designation corresponds to three orbitals.
(d) The designation 6d corresponds to five orbitals. The d sublevel has five orbitals: 6dx^2-y^2, 6dz^2, 6dxy, 6dxz, and 6dyz. The "6d" designation indicates that we are referring to the d orbitals within the sixth energy level.
(e) The designation 5d corresponds to five orbitals. Similarly to (d), the d sublevel has five orbitals: 5dx^2-y^2, 5dz^2, 5dxy, 5dxz, and 5dyz.
(f) The designation 5f corresponds to seven orbitals. The f sublevel has seven orbitals: 5fz^3, 5fxz^2, 5fyz^2, 5fxyz, 5fx(x^2-y^2), 5fy(x^2-y^2), and 5f(x^2-3y^2).
(g) The designation "n = 5" represents all orbitals within the fifth energy level. The number of orbitals in a given energy level is determined by the formula 2n^2, where n is the principal quantum number. Therefore, for n = 5, there are 2 * 5^2 = 50 orbitals.
(h) The designation 7s corresponds to one orbital. The s sublevel contains a single orbital: 7s. The "7s" designation indicates that we are referring to the s orbital within the seventh energy level.
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Calculate the mass percentage composition of nitrogen in acetaminophen, C8H9NO2
The mass percent composition of nitrogen in acetaminophen is 9.26 %.
The mass percent composition of an element is the percentage of the ratio of the molar mass of that element to the molar mass of the entire compound. Acetaminophen represented as C8H9NO2 is a drug that is used as a pain reliever.
First, we will calculate the molar mass of this compound. For this, we should know the mass of each element present in the compound.
mass of C = 12, mass of H = 1, mas of N = 14, mass of O = 16.
Now, we will calculate the molar mass of acetaminophen
= 12*8+ 1*9+14*1+16*2
= 151 g
Now, we have to calculate the mass percent composition of Nitrogen.
The molar mass of nitrogen = 14g
The molar mass of the entire compound = 151 grams.
Mass percent composition of N = (mm of N ÷ mm of C8H9NO2) ×100
= (14/151) × 100 = 0.0926 × 100
= 9.26 %
Therefore, the mass percent composition of nitrogen in acetaminophen (C8H9N02) is 9.26%.
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what does a proton and neutron have in common
Answer:Both protons and neutrons have a mass of 1
Explanation:
Answer:
Protons and neutrons are both subatomic particles, which means they are both components of atoms. Protons and neutrons are found in the nucleus of an atom. They both have mass of 1 amu.
Explanation:
3. What is the energy of a photon that has a frequency of 2.3 x 1014 Hz?
The energy of a photon that has a frequency of 2.3 x 10¹⁴ Hz is 1.524 × 10-¹⁹J
HOW TO CALCULATE ENERGY OF A PHOTON:
The energy of a photon can be calculated by using the formula as follows:E = hf
Where;
E = energy of photon (J)
h = Planck's constant (6.626 × 10-³⁴J)
f = frequency of photon (Hz)
According to this question, a photon has a frequency of frequency of 2.3 x 10¹⁴ Hz. The energy of the photon can be calculated as follows:E = 6.626 × 10-³⁴ × 2.3 × 10¹⁴
E = 15.24 × 10-³⁴+¹⁴
E = 15.24 × 10-²⁰J
E = 1.524 × 10-¹⁹J
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Question 7 What is the molarity for the following solution: 5. 50 L of 13. 3-MH₂CO (the formaldehyde used to "fix" tissue samples)? (A) 0. 022 mol/L (B) 13. 3 mol/L 2. 2 mol/L D) 0. 0133 mol/L 3 Points
The molarity of a solution is calculated by dividing the number of moles of solute by the volume of the solution in litres.
Therefore, the molarity of the H₂CO solution is 13.30 mol/L.
In this case, we have 5.50 L of a 13.3 M H₂CO solution. To find the molarity, we need to calculate the number of moles of H₂CO and divide it by the volume of the solution.
The formula weight of H₂CO is 30.03 g/mol. To convert from molarity to moles, we multiply the molarity by the volume in liters:
13.3 mol/L × 5.50 L = 73.15 mol
So we have 73.15 moles of H₂CO in 5.50 L of solution.
Finally, to find the molarity, we divide the number of moles by the volume of the solution:
73.15 mol ÷ 5.50 L = 13.30 mol/L
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Question 3 please help :)
Explanation:
Removing B from the system
- Decreases the rate of the reaction. Backward reaction (formation of reactants) is favoured.
Crushing A into a powder
- Increases the rate of reaction. This is because of the increased surface area of A.
Warming the system
- Increases the rate of the reaction. Temperature is proportional to rate of reaction.
Adding more A to the system
- Increases the rate of reaction. Forward reaction (formation of products) is favoured.
Putting the system into an ice bath
- Decreases the rate of reaction. Temperature is proportional to rate of reaction.
Decreasing the pressure of the system
- Decreases the rate of the reaction.
.Which hydrogen would be substituted in the figure below in order to form sphingomyelin? What functional group would have to be substituted in its place?a) 1, C6H11O5b) 2, phosphocholinec) 3, COOH
The functional group that would have to be substituted in its place is the hydroxyl (-OH) group. Sphingomyelin is a type of sphingolipid that contains a phosphocholine group attached to the second carbon of the sphingosine backbone.
In order to form sphingomyelin, the hydroxyl group on the second carbon of the sphingosine backbone (position 2) would be substituted with the phosphocholine group. Therefore, answer choice b) 2, phosphocholine, is the correct answer. Sphingomyelin is a type of sphingolipid that is a major component of the plasma membrane of cells, especially in the nervous system. It is composed of a sphingosine backbone, a fatty acid, a phosphate group, and a choline molecule. The sphingosine backbone is a long chain amino alcohol with a hydroxyl group (-OH) on the second carbon, which is where the phosphocholine group is attached to form sphingomyelin.
In order to form sphingomyelin, the hydroxyl group on the second carbon of the sphingosine backbone (position 2) would need to be substituted with the phosphocholine group. This substitution would result in the loss of the hydroxyl group and the addition of the phosphocholine group, which is composed of a phosphate group, a nitrogen-containing base (choline), and a glycerol molecule. Therefore, answer choice b) 2, phosphocholine, is the correct answer. Answer choice a) 1, C6H11O5, refers to a sugar molecule, which is not involved in the formation of sphingomyelin. Answer choice c) 3, COOH, refers to a carboxyl group, which is also not involved in the formation of sphingomyelin.
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