A gas has a density of 1.594 at 37 ° C and 1.35 atm. What is the molecular weight of the gas? Compare the rate of H2 (g) with that of N2 (g) under the same conditions. (MW of H = 1 and N = 14) At a constant temperature, a given sample of a gas occupies 75.0 L at 5.00 atm. The gas is compressed to a final volume of 30.0 L. What is the final pressure of the gas?
Answers
The molecular weight of the gas at 37°C and 1.35 atm is approximately 61.0 g/mol. H2 gas has a rate of effusion about 3.74 times faster than N2 gas.
To find the molecular weight of the gas, we can use the ideal gas law equation:
PV = nRT
Where:
P = pressure (1.35 atm)
V = volume (unknown)
N = number of moles (unknown)
R = ideal gas constant (0.0821 L·atm/(mol·K))
T = temperature (37 °C = 310.15 K)
We can rearrange the equation to solve for the number of moles (n):
N = PV / RT
Using the given density of the gas (1.594 g/L), we can calculate the molar mass (M) of the gas:
M = (density × RT) / P
Substituting the given values:
M = (1.594 g/L × 0.0821 L·atm/(mol·K) × 310.15 K) / 1.35 atm
M ≈ 61.0 g/mol
Therefore, the molecular weight of the gas is approximately 61.0 g/mol.
To compare the rates of H2 (g) and N2 (g) under the same conditions, we can use Graham’s law of effusion, which states that the rate of effusion of a gas is inversely proportional to the square root of its molar mass.
Rate(H2) / Rate(N2) = √(M(N2) / M(H2))
Substituting the molar masses:
Rate(H2) / Rate(N2) = √(28 g/mol / 2 g/mol)
Rate(H2) / Rate(N2) = √14 ≈ 3.74
Therefore, the rate of effusion of H2 gas is approximately 3.74 times faster than that of N2 gas under the given conditions.
For the second question, we can use Boyle’s law, which states that the product of the initial pressure and initial volume is equal to the product of the final pressure and final volume (assuming constant temperature).
P1V1 = P2V2
Substituting the given values:
5.00 atm × 75.0 L = P2 × 30.0 L
P2 = (5.00 atm × 75.0 L) / 30.0 L
P2 ≈ 12.5 atm
Therefore, the final pressure of the gas is approximately 12.5 atm.
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Related Questions
Which is true about about stable isotopes? (1 point)
Isotopes with more neutrons than protons are always stable.
Isotopes are always unstable because they are radioactive.
Isotopes that are naturally occurring in nature are always unstable.
A stable nucleus has a similar number of protons and neutrons.
Answers
The statement a stable nucleus has a similar number of protons and neutrons is true about stable isotopes (Option D).
What is a radioactive isotope?A radioactive isotope can be defined as a chemical element that emits energy in form of different types of radiation such as alpha radiation or beta radiation, which is due they are unstable in normal conditions.
Therefore, with this data, we can see that the radioactive isotopes are unstable and they can emit energy based on diverse types of radioactive emissions such as alpha rays and or beta rays.
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What happens when there is an increase in temperature for a reaction rate? Select all that apply.
Answers
ANSWER
option A and B
EXPLANATION
An increase in temperature will increase the average kinetic energy of the molecule, thereby increasing the frequency of collision.
The correct answer are option A and B
Use the portion of the periodic table shown at the bottom to answer the questions.
Part 1: Name two elements that have the same properties as magnesium (Mg).
Part 2: Determine the number of protons, electrons, and neutrons present in an atom of potassium (K). Explain how you determined your answer using complete sentences.
Answers
Answer:
Part 1 calcium and strontium have same properties as magnesium because all three are in same group.
Part 2 As atomic number of potassium is 19 so it contains 19 protons and 19 electrons because it is neutral
Potassium has 20 neutrons because its mass is 39
We can find neutron = atomic mass - atomic number
Explanation:
Pls help me with this will mark brainliest
Answers
Answer:
Pulmonary circulation moves blood between the heart and the lungs. The oxygenated blood then flows back to the heart. Systemic circulation moves blood between the heart and the rest of the body. It sends oxygenated blood out to cells and returns deoxygenated blood to the heart
Explanation:
The density of hot and cold water are different mainly because
O the molecules in hot water move more slowly and are slightly closer together.
O the molecules in hot water are larger.
O the molecules in hot water move faster and are slightly further apart.
O the molecules in cold water move faster and are further apart.
Answers
Answer: The molecules in hot water move faster and are slightly further apart.
Explanation:
There's more space between the molecules, the volume of hot water has fewer molecules in it and weighs a little bit less than the same volume of cold water. So hot water is less dense than cold water.
Which of the following options gives the correct reactant ratio?
2Fe + 3Cl2 2FeCl3
Answers
The correct reactant ratio for the reaction 2Fe + 3Cl2 → 2FeCl3 is 2 moles of iron (Fe) for every 3 moles of chlorine (Cl2).
A balanced chemical equation represents a chemical reaction where the number of atoms of each element is the same on both sides of the equation. This is achieved by adjusting the coefficients placed before the chemical formulas in the equation.The balanced equation for the reaction 2Fe + 3Cl2 → 2FeCl3 indicates that two moles of iron (Fe) react with three moles of chlorine (Cl2) to produce two moles of iron (III) chloride (FeCl3). This is confirmed by the coefficient values of the reactants and products in the equation.For such more questions on reactant ratio
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Y’all please help me !!!
Answers
If 550 mL of a 3.50 M KCl solution are set aside and allowed to evaporate until the volume of the solution is 275 mL, what will the molarity of the solution be?
Answers
Answer:
Explanation:
Molarity = number of moles / volume
If 550 mL of a 3.50 M KCl solution are set aside and allowed to evaporate until the volume of the solution is 275 mL, which is half of 550 mL, the molarity of the solution with the same number of moles of KCl is 3.5 * 2 = 7.00 M
The molarity of the solution will be 7 M.
What is molarity ?The total count of moles of solute per liter of a particular solution is known as a solution's molarity.
What is solution?The volume of just an object is a measurement of how much space it takes up.
Molarity of the solution can be determined by the formula:
\(M_{1} V_{1} = M_{2} V_{2}\)
where, M = molarity of solution. V = volume.
Given data:
\(M_{1}\) = 3.50 M
\(M_{2}\) = ?
\(V_{1}\) = 550 mL
\(V_{2}\) = 275 mL
Now, put the value of given data in molarity equation.
\(V_{2} = M_{1} V_{1} /M_{2}\\V_{2} = (3.50 M) (550 mL) / (275 mL)\\V_{2} = 7 M\)
Therefore, the molarity of the solution will be 7 M.
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A meteoroid is approaching Earth's surface. Which meteoroid is currently most affected by the Earth's gravitational pull?
Answers
The meteoroid that is currently most affected by Earth's gravitational pull is the one closest to the Earth's surface.
A meteoroid is a small celestial object that orbits the Sun and is significantly smaller than an asteroid. Typically ranging in size from a grain of sand to a few meters in diameter, meteoroids are remnants left behind by comets or asteroids. They are composed of various materials, including rock, metal, and ice.
When a meteoroid enters the Earth's atmosphere, it is called a meteor. Friction with the atmosphere heats up the meteoroid, causing it to glow brightly and create a streak of light across the sky. This phenomenon is commonly referred to as a shooting star or meteor. Most meteors burn up completely before reaching the Earth's surface, but occasionally, larger and more robust meteoroids survive the atmospheric entry and impact the ground.
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15.a. Classify the following alkanes according to their increasing density. C₂Hs , C2H56, C11H24, C₂H6. C36H74
Answers
The order of alkanes according to their increasing density can be seen below:
C₂H5C₂H6C2H56C11H24C36H74What is Alkane?This is referred to a hydrocarbon with a single carbon to carbon bond and examples include butane etc.
Its density increases with increasing number of carbon and hydrogen atoms thereby making it the most appropriate choice.
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Make notes on why did the levels of carbon dioxide in the atmosphere decrease?
Answers
Answer:
Carbon dioxide is a very soluble gas. It dissolves readily in water. As the oceans formed, carbon dioxide dissolved to form soluble carbonate compounds so its amount in the atmosphere decreased. Carbonate compounds were then precipitated as sedimentary rocks, eg limestone.
Uptake by living organisms
Carbon dioxide was also absorbed from the oceans into photosynthetic algae and plants. Many of these organisms, and the simple organisms in the food chains that they supported were turned into fossil fuels, eg crude oil, coal and natural gas, which all contain carbon.
Coal is a fossil fuel which was formed from trees which were in dense forests in low-lying wetland areas. Flooding caused the wood from these forests to be buried in a way that prevented oxidation taking place. Compression and heating over millions of years turned the wood into coal.
Crude oil and natural gas were formed from simple plants and tiny animals which were living in oceans and lakes. These small organisms died and their remains sank to the bottom where they were buried under sediments. The lack of oxygen prevented oxidation from occurring.
Over millions of years, heat and pressure turned the remains of the organisms into crude oil and natural gas. Natural gas contains the smallest molecules and is often found on top of crude oil, trapped under sedimentary rock.
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Answer:
Changes in the atmosphere
The proportion of oxygen went up because of photosynthesis by plants. The proportion of carbon dioxide went down because: it was locked up in sedimentary rocks (such as limestone) and in fossil fuels. it was absorbed by plants for photosynthesis.Cutting down of trees.Because carbon dioxide traps heat in the atmosphere, a lessening of atmospheric carbon dioxide concentrations would mean that more heat could escape into space. This would result in a net decrease in the Earth's average temperature, assuming other factors remain the same.Carbon dioxide levels decreased because of processes that included: dissolving in the oceans. use by plants for photosynthesis. formation of fossil fuels as plants died and their carbon compounds became locked up underground.Photosynthesis removes carbon dioxide naturally — and trees are especially good at storing carbon removed from the atmosphere by photosynthesis. ... These dynamics make restoring and managing existing forests, and adding trees to ecologically appropriate lands outside of farmland, especially important.Explanation:
How do astronomers know about the future collision of Andromeda and the Milky Way?
A) All galaxies will collide at some point
B) The two galaxies have collided previously
C) Astronomers have observed their movements over time
D) The Milky Way has changed course to head toward Andromeda
Answers
Answer:
Astronomers have observed their movements over time
Explanation:
Just took the test!!!
The future collision of Andromeda and milky way are known by astronomers because ; ( C ) Astronomers have observed their movements over time
Andromeda also known as messier 31 is a spiral galaxy that appears as a milky blur when viewed from the earth and it is believed to be slightly over 2.5 million years old.
Astronomers predict that based on its movement and the movement of the Milky way there is most likely going to be a collision in future between the Andromeda and milky way.
Hence we can conclude that The future collision of Andromeda and milky way are known by astronomers because Astronomers have observed their movements over time
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A. Blue only
B. Orange only
C. Orange and green
D.Blue and green
Answers
Answer:
blue only
Explanation:
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Which one of these is most likely to gain electrons and which one is most likely to lose electrons? (And please explain why)
1. Ra (Radium)
2. In (Indium)
3. P (Phosphorus)
4. Te (Tellurium)
5. Br (Bromine)
6. Rb (Rubidium)
Answers
Answer:
(I). The most likely to lose electron is Rubidium
(II). The most likely to lose electron is Bromine
Explanation:
Given that,
Radium, Indium, Phosphorus, Tellurium, Bromine and Rubidium
We know that,
Metal :
They atom which to lose electron these is called metal.
When the atom loses the electron then the positive charge come on the atom.
The most likely to lose electron is Rubidium
Non metal :
They atome which is gains electron. It is called non metal.
So, we can say that, the non metal gains electron.
When the atom gains the electron then the negative charge come on the atom.
The most likely to gain electron is Bromine
Hence, This is required answer.
What is the role of water-soluble vitamins in cellular metabolism?
Answers
The role of water-soluble vitamins in cellular metabolism involves acting as essential coenzymes and cofactors for various metabolic processes.
These vitamins, which include the B-complex vitamins (B1, B2, B3, B5, B6, B7, B9, and B12) and vitamin C, assist in energy production, synthesis of proteins, and maintenance of cellular functions. B-complex vitamins play crucial roles in the breakdown of carbohydrates, fats, and proteins, contributing to energy production in the form of ATP. They are also involved in the synthesis of nucleic acids (DNA and RNA), neurotransmitters, and red blood cells.
Vitamin C, on the other hand, is vital for collagen synthesis, enhancing the immune system, and acting as an antioxidant to protect cells from oxidative damage. Water-soluble vitamins are not stored in large quantities within the body, requiring regular consumption through a balanced diet to maintain optimal health and support cellular metabolism. The role of water-soluble vitamins in cellular metabolism involves acting as essential coenzymes and cofactors for various metabolic processes.
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what materials transmits the most light waves?
Answers
Answer: what materials transmits the most light waves?
Explanation:
 if your commute is 20 miles and you drive an average speed of 60 km/h how many minutes will it take you to get to work
Answers
Answer:
33 minutes
Explanation:
60 km/h = 37.28 mi/h
20/37.28 = 0.5364 h
0.5364 * 60 min = 32.2 minutes
Compared to absolute dating, what is an advantage of relative dating? Help?
Answers
which dating do u mean
#7) How many waves are in this picture?
Answers
Answer:
4
Explanation:
Answer:
B.
Explanation:
I don't know much about this subject, but it seems that a wave is when the line is above the line in the middle.
What is the relative rate of diffusion of CH4 and NO2?
Answers
Answer:
=32×1632×√1632=34√2.
Explanation:
Question 13
5 pts
For questions 10-13 refer to the following reaction:
2H₂ + O2-----> 2H₂O
If 10.0 g of H₂ reacts with 10.0 g of O2,
how many grams of excess reactant are remaining after the reaction goes
to completion?
Answers
When 10.0 g of H₂ reacts with 10.0 g of O₂, the limiting reactant is O₂, and 8.75 grams of excess H₂ are remaining after the reaction is complete.
In chemical reactions, reactants combine to form products. However, sometimes there may be an excess of one reactant, which means that it is present in greater quantity than required for a complete reaction with the other reactant.
In such cases, the excess reactant is not completely consumed and remains unused after the reaction reaches completion.
The balanced chemical equation given for the reaction is:
2H₂ + O₂ → 2H₂O
From the equation, we can see that 2 moles of hydrogen gas react with 1 mole of oxygen gas to produce 2 moles of water.
To find the number of moles of each reactant, we need to convert the given masses to moles using the molar mass of each substance. The molar mass of hydrogen gas (H₂) is 2 g/mol, and the molar mass of oxygen gas (O₂) is 32 g/mol.
For hydrogen gas (H₂):
Number of moles = Mass / Molar mass
Number of moles = 10.0 g / 2 g/mol
Number of moles = 5.0 mol
For oxygen gas (O₂):
Number of moles = Mass / Molar mass
Number of moles = 10.0 g / 32 g/mol
Number of moles = 0.3125 mol
From the balanced chemical equation, we can see that the ratio of hydrogen gas to oxygen gas is 2:1. Therefore, for a complete reaction, 2 moles of hydrogen gas react with 1 mole of oxygen gas.
Since the mole ratio is 2:1, we can conclude that oxygen gas is the limiting reactant because we have 0.3125 mol of oxygen gas, which is less than 5.0 mol of hydrogen gas.
Since 1 mole of oxygen reacts with 2 moles of hydrogen, we can determine the amount of hydrogen gas required by multiplying the number of moles of oxygen gas by 2:
Amount of hydrogen gas required = 2 * 0.3125 mol
Amount of hydrogen gas required = 0.625 mol
Since we have an excess of hydrogen gas (5.0 mol), we can subtract the amount of hydrogen gas required (0.625 mol) from the total amount of hydrogen gas (5.0 mol) to find the remaining excess:
Excess reactant remaining = Total amount of reactant - Amount of reactant required
Excess reactant remaining = 5.0 mol - 0.625 mol
Excess reactant remaining = 4.375 mol
To convert the remaining moles of hydrogen gas to grams, we can use the molar mass of hydrogen gas:
Mass of excess reactant remaining = Moles * Molar mass
Mass of excess reactant remaining = 4.375 mol * 2 g/mol
Mass of excess reactant remaining = 8.75 g
Therefore, after the reaction goes to completion, there will be approximately 8.75 grams of excess hydrogen gas remaining.
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what causes the earth to have layers?
Answers
Molybdenum can form a wide series of halide compounds, including four different fluoride compounds. the percent by mass of molybdenum in the four compounds is 63.0%, 56.0%, 50.0%, and 46.0%. determine the formula and name for each of the four different molybdenum fluorides.
Answers
Answer: 215.0%
Explanation:
What kind of intermolecular forces are involved in water dimer formation?
Answers
Hydrogen bonds are the intermolecular forces responsible for the production of water dimers.
Intermolecular forces: What are they?Between molecules, intermolecular forces are at work. In contrast, molecules themselves exert intramolecular pressures. In comparison to intramolecular forces, intermolecular forces are weaker. The London dispersion forces, dipole-dipole interactions, ion-dipole interaction, & van der Waals forces are a few examples of intermolecular forces.
How do states of matter respond to intermolecular forces?The equilibrium between the intermolecular interactions and a kinetic energy of a specific particles (atoms or molecules) determines the state of a material. The kinetic energy, which is dependent on the substance's temperature, maintains the molecules separated and in motion.
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The average time it takes to walk a mile is 0.33 hours. What is this time in
seconds?
Answers
Answer: 19.8 seconds
Explanation:
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Wave functions describe orbitals in a hydrogen atom. Each function is characterized by 3 quantum numbers: n, l, and ml.If the value of n = 4:... The quantum number l can have values from to .... The total number of orbitals possible at the n = 4 energy level is .If the value of l = 2:... The quantum number ml can have values from to .... The total number of orbitals possible at the l = 2 sublevel is .
Answers
The values that l can take are negative l to positive l increasing by an energy each time so for 2 it goes negative 2, negative, 101 and 2 and the total number of orbitals possible at that sub level. Then is 5.
How many orbitals are possible at n 3 ?The Bohr model was a one-layered portrayal of the particle's electron scattering that utilized a solitary quantum number. The size of the circle, which is characterized by the n quantum number, was the main snippet of data that made a difference. The electron had the option to involve three aspects because of Schor dinger's model. Accordingly, depicting the orbitals in which electrons can be found requires three directions, or three quantum numbers.
The essential (n), precise (l), and attractive (m) quantum numbers are the three organizes that outcome from Schor dinger's wave conditions. The size, shape, and spatial direction of the orbitals on an iota are portrayed by these quantum numbers.
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Can you quess my Hogwarts house? Please explain why you think that and I will give brainliest
Answers
Answer:
I prob can bc I'm a bad b*tch
lol
Answer:
Slytherine
Explanation:
I hope you have a wonderful rest of your day!!!! :)
Do you like the eye color black or blue better?
Answers
Answer:
black.
Explanation:
I like seeing myslef, so therefore with black eyes I would be seeing my reflection
black coffee has a ph of about 5, and orange juice has a ph of about 3. how big is the difference in acidity between these two common drinks?
Answers
Black coffee has the pH of about 5, and the orange juice has the pH of about 3. The orange juice is 100 time more acidic than the black coffee.
For the orange juice :
pH = - log [H⁺]
3 = - log [H⁺]
-3 = log [H⁺]
[H⁺] = 0.001 M
For coffee:
pH of coffee = 5
The Hydrogen ion concentration [H⁺] = ?
pH = - log [H⁺]
5 = - log [H⁺]
-5 = log [H⁺]
[H⁺] = 0.00001 M
[H⁺] for orange juice / [H⁺] for coffee = 0.001 / 0.00001
[H⁺] for orange juice / [H⁺] for coffee = 100
This means that the orange juice is 100 times more acidic than the black coffee.
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Find the mole ratio between N2 and H2O in : 4NH3 +6NO -> 5N2 +6H2O
Answers
The mole ratio of nitrogen gas, N₂ and water, H₂O in the given chemical equation is 5 : 6
How do i determine the mole ratio of N₂ and H₂O?Mole ratio of elements in a chemical equation is simply the ratio of the coefficients of the elements in the balanced equation.
With the above information, we shall obtain the mole ratio of N₂ and H₂O. This is illustrated below:
Balanced equation: 4NH₃ + 6NO -> 5N₂ + 6H₂OMole ratio of N₂ and H₂O =?4NH₃ + 6NO -> 5N₂ + 6H₂O
From the balanced equation,
Coefficient of N₂ = 5Coefficient of H₂O = 6Mole ratio of N₂ and H₂O = Coefficient of N₂ / Coefficient of H₂O
Mole ratio of N₂ and H₂O = 5 / 6
Mole ratio of N₂ and H₂O = 5 : 6
Thus, from the above, we can conclude that the mole ratio of N₂ and H₂O is 5 : 6
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