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Questions and answers by
Josh Porter
Questions (14)
A 200.0 mL sample of a noble gas collected at 78.5 kPa and 10°C has a mass of 0.027 g. What is the molar mass of the gas?
1 answer
255 views
How many moles of ethylene (C2H4) gas occupy a volume of 3.25 L at STP?
1 answer
333 views
A sample of ammonia gas occupies a volume of 1.58 L at 22°C and a pressure of 0.983 atm. What volume will the sample occupy at
1 answer
725 views
Compute the ratio of the effusion and/or diffusion rates of gaseous ammonia (NH3) to gaseous hydrogen chloride (HCl)
1 answer
469 views
If the number of molecules and the volume of a gas remain constant, but the kinetic energy of the molecules increases, the
2 answers
307 views
If two gases of different mass have the same kinetic energy, how does the temperature of the two gases compare?
1 answer
291 views
A sample of gas is squeezed until its pressure doubles. How is the volume of the gas changed by the squeezing?
1 answer
209 views
How does the pressure change if the molecules in a fixed volume of gas strike with the same force, but more frequently?
1 answer
291 views
If 20.5 Liters of nitrogen are used, how many liters of hydrogen are also used, and how many liters of ammonia are produced?
1 answer
270 views
Ammonia is made through the Haber process by direct reaction between nitrogen and hydrogen. If 20.5 Liters of nitrogen are used,
1 answer
458 views
When 4.75 g of KClO3 was heated, only 1.24 g of oxygen was obtained. What is the percent yield of these reactions?
1 answer
245 views
If 8.25 g of Calcium metal reacts with a solution containing 12.50 g of Cu(NO3)2 to produce copper metal, which reactant is
1 answer
364 views
How many Liters of hydrogen gas are produced if 3.52 g of magnesium react with excess nitric acid at STP?
1 answer
744 views
If 12.5 g of Zinc reacts with excess hydrochloric aid, how many grams of zinc chloride are produced?
1 answer
685 views
