1. Which gas has the second highest average molecular speed at 400 K? а. Kr b. 02 c. SO3 d. CH4 2. What best describes a sample of equimolar amounts of neon and fluorine gas at 245 K? Answer choice Average molecular speed Average kinetic energy Ne = F2 Ne = F2 A Ne < F2 В Ne = F2 Ne > F2 Ne = F2 D Ne > F2 Ne > F2 3. What is the electron configuration of the valence electrons for the ground state Cr atom? a. 4s2 3d+ b. 4s1 3d5 c. 4s2 3d2 4p2 d. 4s2 4p+

Q: e of helium gas occupies 0.315 L at 300 kPa. More pressure is applied from the surroundings and the…

A: Given :-  Initial pressure = 300 kPa  Final pressure = 200 kPa  Initial volume = 0.315 L  To be…

Q: Calculate the Keg if all are gases. 5 2 NH3 1.000 atm 0.600 atm 0.400 atm N2 3 H2 heat start: equil:…

A: For an equilibrium reaction , expression for Keq is written in terms of concentration of gaseous…

Q: 1. If there are 4.00 moles of a gas at a pressure of 5.60 atm and a volume of 12.0 liters, what is…

A:

Q: The atmospheric pressure in the eye of a hurricane is found to be 26.6 in of mercury. The pressure…

A:

Q: For 150 mL of a gas 27°C, what is the temperature at which the volume of the gas becomes 250 mL at…

A: For an ideal gas, there is no attraction force between gaseous molecules. From the ideal gas…

Q: A 3.4 L closed container filled with helium gas at 80.4°C and 1.32 atm is cooled to 34.0°C. The…

A: Given P1 = 1.32 atm , V1 = 3.4 L, T1 = 80.4°C P2 = ? , V2 = 2.7 L, T2 = 34°C

Q: Which gas has the slowest average molecular speed at 25 °C? Molecular Gas mass (g/mol) Ne 20.2 Ar…

A: Average  molecular  speed  = 8RTπM  where M is molar mass Average  molecular  speed  inversely…

Q: command option 11. If 1.56 mol of oxygen gas exerts a pressure of 24 psi at 21°C, what is the volume…

A: The ideal gas equation is given by, PV=nRT where P is the pressure, V is the volume, n is the number…

Q: 1. Answer the following questions about the distribution of molecular velocities in a gas. a.…

A: Interpretation: To calculate Vrms of O2, N2, He and H2 at 298 K.

Q: A dusty tank containing 2.23 grams of an unknown gas was found in a cellar. What is the type of gas…

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Q: When gasses are collected by water displacement, there is always water vapor (gaseous water)…

A:

Q: Part 1. A chemist reacted 12.0 liters of F2 gas with NaCl in the laboratory to form Cl2 gas and NaF.…

A: Given: Volume (V), F2 used = 12 L The pressure (P) = 1.5 atm Temperature (T) = 28 K Standard P, T…

Q: Which of the following statements is/are valid assumption(s) of the kinetic molecular theory? I.…

A: Here some statements about the assumptions of kinetic molecular theory of gas are given. We have to…

Q: Considering three identical flasks filled with different gasses. Flask A: CO at 760 torr and 0º C.…

A: The average kinetic energy of the molecule can be determined by the following relationship: Kinetic…

Q: A 2.56 gram sample of an unknown gas is found to occupy a volume of 1.64 L at a pressure of 958 mmHg…

A: The molar mass of a gas can be calculated by using the ideal gas equation: The temperature,…

Q: 2. The following Maxwell-Boltzmann distribution graph represents a kinetic energy distribution at…

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Q: Boyle's Law explores the effects of pressure on the volume of an ideal gas. Boyle converted his…

A: Boye's law gives relationship between volume and pressure.

Q: Iron III oxide reacts with H2 gas to yield Fe and water. What volume of H2 gas at 754.3 mmHg and 723…

A: A multiple choice question based on balancing the equation, which is to be accomplished.

Q: 5. An unknown monatomic gas X has a density of 5.37 g/L at 25.0 °C and 101.3 kPa. Calculate the…

A:

Q: Select the correct descending order of the average kinetic energies of the following gas molecules…

A: Answer:STP means standard temperature and pressure. When a system is at STP then the system is at…

Q: Air is composed of approximately 78% N2, 21% O2 and 1% percent other gases. Calculate the density of…

A: We would use ideal gas law to calculate density of Helium gas at STP .  To explain why balloon…

Q: Calculate the volume 3.00 moles of a gas will occupy at 24.0°C and 105.2 КРа. * 35.4 L 15.4 L 70.4 L…

A: Answer C

Q: An unknown gas has the following percent composition: 54.529%C, 9.1522 % H, and 36.319 % O. Vapors…

A: we have to determine the molecular formula of the compound

Q: Which one of the following changes would cause the pressure of a gas to double assuming temperature…

A:

Q: DETERMINE (i) the most probable speed, (ii) the average speed, and (iii) the square-root- mean speed…

A: Most probable speed, vmp = 2RTM   Average speed, vave = 8RTπM   Root-mean-square speed, vrms =…

Q: An unknown gas X effuses 1.56 times faster than C4Hg. What is the molecular mass of gas X? i g mol-¹…

A:

Q: 10. Under what conditions will the behavior of a real gas best approximate the behavior of an ideal…

A: Real gases are the gases that do not obey the ideal gas law whereas all ideal gases must adhere to…

Q: 14. Consi 14. Consider the following pictures of gases at the same temperature. O = Ne and i. V. vi.…

A: The question is asking to rank the pictures of gases based on different parameters such as pressure,…

Q: A glass container was initially charged with 3.70 moles of a gas sample at 3.75 atm and 21.7 °C.…

A:

Q: Considering the ideal gas law PV = n RT, what is P inversely proportional to? 1. only T 2. only n 3.…

A: The ideal gas equation -&gt; PV = nRT P=nRT/V

Q: Open-Ended Questions A 20 dm' closed container containing 1.5 mol H, gas, x mol N, gas and 1.2 mol…

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: ld=15556158&HeplD=6b9f9b2f... 2 012 ourses Gay-Lussac's law states that the pressure of a gas is…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: 11. Consider the four gases, CO2, N2, CCI,, and He. Which is the correct order of increasing average…

A: Given gasses are: CO2, N2, CCl4, and He To compare their average molecular speed at 100°C

Q: 21. At STP, how many moles are in these volumes of gases? a. 67.2 L SO₂ b. 0.880 L He c. 1.00 × 10³…

A: We have to calculate the number of moles of gas at STP

Q: For many purposes we can treat ammonia (NH,) as an ideal gas at temperatures above its bolling point…

A: Given : Initial temperature of NH3 gas , T1 = 35.0oC = 35.0 + 273.15 = 308.15 K Final temperature of…

Q: A gas mixture in a 1.65-L container at 294 K contains 10.0 gg of Ne and 10.0 g of Ar. Calculate the…

A:

Q: What factors would contribute to increasing the overall average speed (Hrms) of a aseous sample? a.…

A: The root mean square velocity is the square velocity of the square root of the average square root…

Q: Which

A: We have to find out incorrect statement

Q: Suppose the Ideal Gas Law is p=(nRT^2)/(V^2). Evaluate these derivatives: a. ((∂p/∂T))n,V b.…

A: Ideal gas law is a relation between pressure, volume and temperature of a gas.

Q: to 50.0°C. If the pressu gas? a.) 38.6 mL b.) 87.5 mL c.) 31.8 mL d.) 35.0 mL e.) 52.5 mL

A: According to Charles's law at constant pressure, the volume of a gas is directly proportional to the…

Q: Consider two hypothetical gases, gas A and gas B, which have the following Van der Waals constants:…

A: The pressure of Gas B will deviate less than the pressure of Gas A from the pressure predicted by…

Q: A sealed container with a volume of 63.8 mL is filled with a gas at 22°C at 747mmHg. The mass of the…

A: We will use ideal gas equation to find molar mass of gas and then estimate the gas .

Q: A gas at 200K and 10atm has a molar volume 20% smaller than that calculated with the ideal gas law.…

A: Given that, A gas has molar volume 20% smaller than that calculated with the ideal gas law at 200 K…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.