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Question 10 10 pts If hydrogen gas (H2) requires 28.51 minutes to effuse through a small...
Question 14 5 pts The thermochemical equation for the reaction of nitrogen and hydrogen to form ammonia (NH3) is N2(g) + 3H2(g) -> 2NH3(g) AH = -92.22 kJ What is AH for reaction of 7.183 g of N2 in the above equation? Atomic weights of the elements encountered in this problem are as follows: H 1.00794 g/mol N 14.00674g/mol -47.29 kJ -85.41 kJ -23.65 kJ -68.19 kJ -12.35 kJ
A sample of He gas is observed to effuse through a porous barrier in 8.83 minutes. Under the same conditions, the same number of moles of an unknown gas requires 30.1 minutes to effuse through the same barrier. The molar mass of the unknown gas is ___ g/mol
A sample of CH4 gas is observed to effuse through a porous barrier in 6.35 minutes. Under the same conditions, the same number of moles of an unknown gas requires 14.8 minutes to effuse through the same barrier. The molar mass of the unknown gas is ___g/mol.
A sample of O2 gas is observed to effuse through a pourous barner in 5.93 minutes. Under the sa,e number of moles of an unknown gas requires 3.92 minutes to effuse through the same barrier. The molar mass the unknown gas is g/mol.
8. Neon gas is found to effuse through a hole. Careful measurement indicates that 1.42 x 10 mol effused in 5.8 minutes. How long (in min) would it take for the same amount of xenon gas to effuse through the same hole under the same conditions? A: 14.8
A sample of He gas is observed to effuse through a pourous barrier in 8.78 minutes. Under the same conditions, the same number of moles of an unknown gas requires 22.1 minutes to cffuse through the same barrier. The molar mass of the unknown gas is 18 mol Submit Answer Retry Entire Group 3 more group attempts remaining
8. Neon gas is found to effuse through a hole. Careful measurement indicates that 1.42 x 10 mol effused in 5.8 minutes. How long (in min) would it take for the same amount of xenon gas to effuse through the same hole under the same conditions? A: 14.8 RKSHEET 9 9. A 2.00 L bottle contains the following gases: 0.0150 mol He, 0.100 mol Ny, and 0.00250 mol Xe. If the temperature of the gas mixture is 22.4 °C, what...
A gas of unknown molecular mass was allowed to effuse through a small opening under constant pressure conditions. It required 52 s for 1.0 L of the gas to effuse. Under identical experimental conditions it required 27 s for 1.0 L of O2 gas to effuse. Calculate the molar mass of the unknown gas. (Remember that the faster the rate of effusion, the shorter the time required for effusion of 1.0 L; that is, rate and time are inversely proportional.)...
Question 12 5 pts In the reaction of nitrogen gas, N2, with hydrogen gas, H2, to form ammonia gas, NH3, how many moles of hydrogen are needed to react with 2 moles of nitrogen? N2 + 3H2 - 2 NH3
Hydrogen gas, H2, reacts with nitrogen gas, N2, to form ammonia gas, NH3, according to the equation 3H2(g)+N2(g)→2NH3(g) NOTE: Throughout this tutorial use molar masses expressed to five significant figures. How many molecules (not moles) of NH3 are produced from 4.21×10−4 g of H2?