Enter your answer in the provided box. The hydrogen gas generated when calcium metal reacts with water is collected over water at 25°C. The volume of the gas is 641 mL and the pressure is 988 mmHg. What is the mass (in grams) of the hydrogen gas obtained? The vapor pressure of water at 25°C is 23.76 mmHg. g

Q: Calculate the volume of each substance at STP.   a. 4.1 mol Ar     L   b. 1.9 g CO2     L

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Q: If a sample of hydrogen gas was collected over water. If the total pressure was 135.5 KPa, what…

A: Total pressure of the gas mixture = 135.5 KPa The pressure of the water vapour = 2.8 KPa

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Q: 24. A 2.50 L sample of nitric oxide gas at 100 °C is cooled to 20 °C. If the pressure remains…

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Q: alcium hydride (CaH 2) reacts with water to form hydrogen gas:   CaH 2 (s) + 2H 2O (l) → Ca(OH) 2…

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Q: What volume of hydrogen gas, measured at STP, is produced when 10.0 g of calcium hydroxide is…

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Q: What volume will 20.0 g of argon occupy at STP

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Q: Calculate the volume, in liters, occupied by 1.92 mol of neon gas at STP. O 43.0 L 22.4 L 20.2 L O…

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Q: What is the mass of 56.2 L oxygen gas at STP? O 80.3 g 50.2 g O 32.6 g

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Q: Be sure to answer all parts. Enter your answer in scientific notation. A gas-filled balloon having a…

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Q: What mass of magnesium is needed to produce 80mL of hydrogen gas at STP?

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Q: How many liters of hydrogen gas at STP were generated from 52.70 g of zinc metal?

A: Generation of hydrogen gas from 52.0 g of Zn metal.

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Q: 16. 1.22 L of oxygen was collected at 24°C and 0.985 atm. The sample was then heated to 54°C and the…

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Kinetic-Theory of Gases

Kinetic theory of gases is the model or method which was developed in the 19th century by Maxwell and Boltzmann. This is possible as the interatomic force which is of short-range forces that are important for solids and liquids can be neglected for gases. This theory or gas law gives a molecular interpretation of the pressure and temperature of a gas and is consistent with gas laws and Avogadro’s hypothesis. This theory is very helpful to correctly explain the specific heat capacities of many gases, kinetic energy and it also explains the transport qualities such as viscosity, thermal conductivity, and diffusion with molecular parameters. As stated in the kinetic-molecular theory, the temperature of a substance or gas particle is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles, called average kinetic energy.