Posted by **helen ** on Tuesday, May 22, 2012 at 1:47pm.

How many grams are in 2.6 moles of Maganese?

What is the mass of 14.7 moles of H2O?

What is the mass of 7.2 Liters of H2O?

- Chem -
**DrBob222**, Tuesday, May 22, 2012 at 2:16pm
mols = g/molar mass will get the first two.

I suppose this is at STP. L x (1 mol/22.4L) = mols, then use the above formula to convert mols to grams.

- Chem -
**Helen **, Tuesday, May 22, 2012 at 10:08pm
So for the first one would I divide 2.6 and the molar mass of Manganese which is 24.3 to get the answer?

## Answer This Question

## Related Questions

- chemistry - Mg3N2 +6H2O- 3Mg(OH)2 + 2NH3-- How many grams of H2O are needed to ...
- Chem - If you start with 3.500 g of ZnSO4 (Zinc Sulfate) & 7 H2O and heat it for...
- CHEM MOLES !@@! - Mole Calculation Worksheet 1) How many moles are in 15 grams ...
- chemistry - Find the mass of water (H2O) needed to react with 150 grams of ...
- Chemistry - Find the mass of water (H2O) needed to react with 150 grams of ...
- chemistry - Calculate the weight (in mg) of borax Na2B4O7.10H20 required to ...
- Chemistry - Thank you for your help. I did want to clarify why you are only ...
- chemistry - Find the mass of water (H2O) needed to react with 150 grams of ...
- Chemistry - For the reaction 2H2 + 1O2 à 2H2O, there are 8.08 grams of H2 ...
- Chemistry - Based on the following balanced equation: 2 NH3 + 2 O2 -->N2O + 3...

More Related Questions