- #1
kirsten_2009
- 137
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Homework Statement
Determine how many grams of Mg must react with HCl in order to produce 40 mL of hydrogen gas at 22 degrees Celsius and 1.02 bar. Also, If the Mg ribbon weighs 0.836 mg/mm, how many mm of the ribbon will you require?
Homework Equations
PV=nRT
Mg(s) + 2HCl(aq) --> MgCl2(aq) + H2(g)
The Attempt at a Solution
n=PV/RT
n= (1.00 atm)(0.04 L) / (0.0821 L*atm/mol*K)(295.15 K)
n= 0.04/24.232 = 0.0016507098 mol * 24.3050 g/mol = 0.040 g Mg
40 mg x 1mm / 0.836mg = 47.85mm
Correct? Thanks for the help!