The question asks
How many atoms of oxygen are in 1 gram of silver nitrate (AgNO3)?
if u know the solution PLSSSS give me the steps to how u got it because I am sooooooo lost.
thanks ;)
Urgent chemistry hw help - moles/molecules/atoms and stoichiometry...?
2016-05-30 5:53 pm
回答 (1)
2016-05-30 5:59 pm
Molar mass of AgNO₃ = 107.9 + 14.01 + 16.00×3 = 169.9 g/mol
Number of moles of AgNO₃ = (1 g) / (169.9 g/mol) = 1/169.9 mol
1 mole of AgNO₃ contains 6.022 × 10²³ formula units, and 1 formula units contains 3 O atoms.
Number of O atoms = (1/169.9 mol) × (6.022 × 10²³ /mol) × 3 = 1.06 × 10²²
Number of moles of AgNO₃ = (1 g) / (169.9 g/mol) = 1/169.9 mol
1 mole of AgNO₃ contains 6.022 × 10²³ formula units, and 1 formula units contains 3 O atoms.
Number of O atoms = (1/169.9 mol) × (6.022 × 10²³ /mol) × 3 = 1.06 × 10²²
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