How many moles of methane gas molecules, CH4, are in 11.2 liters of methane at standard conditions?

a. 11.2 moles

b. 27.2 moles

c. 179.2 moles

d. 0.5 moles

The composition of planetary atmospheres is determined in part by the speeds of the molecules of the constituent gases because the faster-moving molecules can reach escape velocity and leave the planet.

When 10.9 g CaCO3 reacts with excess hydrochloric acid, as below, 3.79 g of CO2 is produced. What is the percent yield of CO2? Do not type the units with your answer. CaCO3 (s) + HCl (aq) = > CO2 (g) + CaCl2 (aq) + H2O (l) (not balanced)

6) Where are the electrons found?

There to be more gas dissolved in a cold Diet Coke than warm Diet Coke

A solution of benzene and toluene at 25 °C exerts a total vapor pressure of 66.6 torr. What is the mole fraction of benzene in the vapor phase? The vapor pressures of pure benzene and toluene at 25 °C are 94.2 torr and 28.4 torr, respectively. 0

A gas occupying a volume of 25 ft3 weighs 3.5 lbf on the moon, where the acceleration of gravity is 5.47 ft/s2. determine its weight, in lbf, and density, in lb/ft3, on mars, where g = 12.86 ft/s2.

What's the physical state of hydrogen and zinc in 2HCl+Zn=ZnCl2+H2

H2O (s) ⇒ H2O What would be the best argument against writing this in the form of a chemical equation?

What effect does an increase in products have on the reaction rate of a mixture at equilibrium?

Explain the basic principles of a distillation unit operation