# chemistry

posted by .

What mass in grams of sodium hydroxide is produced if 20.0 g of sodium metal reacts with excess water according to the chemical equation 2Na(s)+2H20(l)=2NaOH(aq)+H2(g)?

Please show me step by step how to do this because I have 5 other questions like this one on a worksheet and I have no idea how to do this stuff

• chemistry -

Here are the steps to go through.
1. Write the balanced chemical equation.
2. Convert what you have into mols, in this case that is convert 20 g Na to mols remembering that mols = grams/molar mass (actually atomic mass in this case).
3. Now convert mols of what you have (Na here) to mols of what you want (in this case NaOH) using the coefficients in the balanced equation. As a big hint, you use dimensional analysis to do this.
4. Now convert mols of what you want (in this case mols NaOH from step 3) to grams. grams = mols x molar mass.

Let me know if you don't understand one of the parts but work as far as you can, post your work, and tell me exactly why you don't know the next step.

• chemistry -

## Similar Questions

1. ### chemistry

Element Symbol Atomic Mass --------------------------------------- Bromine Br 79.904 Calcium Ca 40.078 Carbon C 12.011 Chlorine Cl 35.4527 Cobalt Co 58.93320 Copper Cu 63.546 Flourine F 18.9984032 Hydrogen H 1.00794 Iodine I 126.904 …
2. ### chemistry

What mass in grams of sodium hydroxide is produced if 20.0 g of sodium meal reactts with excess water according to the chemical equation 2 Na(s)+2 H2O(l)=2 NaOH(aq)+H2(g)?
3. ### chemistry

What mass, in grams, of sodium hydroxide (NaOH) is produced if 20 grams of sodium metal(Na) reacts with excess water?
4. ### chemistry

1) If a total of 13.5 mol NaHCO3 and 4.5 mol of C6H8O7 react, how many moles of COs and NA3C6H5O7 will be produced?
5. ### Chemistry

When sodium Metal is dropped into water, all the metal reacts in the equation shown below. What mass of hydrogen is liberated from a 46.0 gram piece of sodium?
6. ### chemistry

if a small piece of sodium is dropped into water,it begins to react, forming hydrogen gas and sodium hydroxide. In the equation, 2Na(s)+2H2O(l) 2NaOH(aq)+H2(g),the sodium hydroxide that is formed is a..
7. ### Chemistry

solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. how many molecules of hydrogen gas are formed when 48.7 g of sodium are added to water?
8. ### Chemistry

what mass in grams of sodium hydroxide is produced if 20.0g of sodium metal reacts with excess water according ro the chemical equation, Na(s)+H2O4->naoh(aq)+h2(g)
9. ### AP Chemistry

What mass in grams of sodium hydroxide is produced if 20.0 g of sodium metal reacts with excess water according to the chemical equation?
10. ### Chemistry

solid sodium reacts violently with water producing heat, hydrogen gas and sodium hydroxide. How many molecules of hydrogen gas are produced when 65.4g of sodium are added to water?

More Similar Questions

Post a New Question