Posted by **sandy** on Saturday, May 7, 2011 at 10:56am.

how can i calculate the number of: 1.molecules in 30g water.2.atoms in 50 dm^3 nitrogen gas.3.nucleons in 10 cm^3 flourine gas?

- Physical science -
**DrBob222**, Saturday, May 7, 2011 at 12:34pm
1. Hint:

One mole of water (18 grams) contains 6.022E23 molecules of H2O).

2. Hint: There are 6.022E23 molecules in 1 mole N2 which occupies 22.4 L at STP and the number of atoms is twice that.

3. Hint:How many moles F2 do you have? That will be 10cc/22,400 = ??

How many F2 molecules do you have? That will be moles x 6.022E23. How many atoms F2 do you have. You will have twice the number of molecules. How many nucleons do you have? There are 9 protons and 10 neutrons in each molecule of F2.

- Physical science -
**john**, Wednesday, August 13, 2014 at 3:31pm
Calculate the total number of ions in 2,0g K2SO4

- Physical science -
**Kajol**, Thursday, August 14, 2014 at 12:57pm
3.13E23

## Answer This Question

## Related Questions

- Science - Calculate the number of (a) atoms in 50 dm^3 nitrogen gas (b)nucleons ...
- physical science (chemistry) - calculate the number of atoms in 50 dm3 nitrogen...
- Chemistry - Please show me the steps..... At STP, 3.00 L of nitrogen gas ...
- physical science - calculate the number of molecules in 30g water
- (1-13) Chemistry - Science - Which of the following effects will make the ratio...
- Physical science - The number of molecules in 30g of water?
- chemistry - how many molecules are in 5.5 moles of oxygen gas? How many atoms ...
- science - The average velocity of molecules of nitrogen gas (N2) at room ...
- physics - Consider N atoms con¯ned on a surface of area A at temperature T . The...
- science - A sample of certain mass of a gas was collected and it was fond that ...

More Related Questions