Answer to Question #319258 in General Chemistry for Tshego

Question #319258

A crucible containing an unknown mass of magnesium weighs 37,63 if the mass of the empty crucible was found to be 32,83.determine the number of moles of magnesium

Expert's answer

m(Mg) = 37.63 - 32.83 = 4.8 g

n(Mg) = m(Mg)/Mr(Mg) = 4.8 g / 24 g/mol = 0.2 mol

Learn more about our help with Assignments: Chemistry

Comments

No comments. Be the first!

Leave a comment

Related Questions

1. Derive the Henderson-Hasselbalch equation using a weak acid ethanoic acid.
2. A sample of oxygen gas occupies a volume of 7.93 L at 59 °C and 843 mm Hg. The volume of the gas sa
3. A. A sample of helium gas at a pressure of 0.774 atm and a temperature of 259 °C, occupies a volume
4. B. A sample of neon gas at a pressure of 0.996 atm and a temperature of 28.9 °C, occupies a volume
5. A. A sample of oxygen gas at a pressure of 0.986 atm and a temperature of 23.3 °C, occupies a volum
6. A mixture of methane and carbon dioxide gases, at a total pressure of 648 mm Hg, contains 2.03 grams
7. how many grams of sodium are needed to produce 19.4 L of hydrogen gas according to the following rea