9. A helium-filled balloon has a volume of 50.0 L at 25°C and 820.8mmHg atm. What pressure will it have
1 answer:
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Answer:
13.4mol of Mg
Explanation:
Given parameters:
Mass of magnesium = 321g
Unknown:
Number of moles = ?
Solution:
The number of moles of a substance is given as;
Number of moles =
Molar mass of Mg = 24g/mol
Insert the parameters and solve;
Number of moles = = 13.4mol of Mg