G A sample that contains aluminum is reacted with sulfuric acid according to the equation given below. When the aluminum dissolved the total volume of gas collected over water at 25 °C is 0.722 L at a total pressure of 739 mm Hg. What mass of hydrogen gas is collected?

Mass of hydrogen gas is collected is 0.058 grams

Explanation:

The balanced chemical reaction is :

According to the ideal gas equation:

PV=nRT

P = Pressure of the gas = 739 mm Hg =  0.97 atm   (760mmHg= 1atm)

V= Volume of the gas = 0.722 L

n=  moles of gas = ?

T= Temperature of the gas in kelvin =

R= Gas constant =

n=0.029

Mass of hydrogen =

Mass of hydrogen gas is collected is 0.058 grams

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