# chemistry

how many grams of oxygen is required to produce 2.0 kg of water??

1. 👍
2. 👎
3. 👁
1. 1. Write and balance the equation.
2H2 + O2 ==> 2H2O

2. Convert what you have (water in this case) to moles. moles = grams/molar mass that's 2000/18.015 = ?? moles.

3. Using the coefficients in the balanced equation, convert moles of what you have (water) to moles of what you want (in this case oxygen).

4. Now convert moles oxygen to grams. g = moles x molar mass.

1. 👍
2. 👎
2. thank you very much DrBob!!I really appreciate this

1. 👍
2. 👎

## Similar Questions

1. ### stoichiometry

Ammonia gas reacts with oxygen gas according to the following equation: 4NH3 + 5O2----4NO + 6H2O a. How many moles of oxygen gas are needed to react with 23 moles of ammonia? (29 mole) b. How may grams of NO are produced when 25

2. ### chemistry

Copper(II) sulfide reacts with oxygen to produce copper (II) oxide plus sulfur dioxide. Suppose you start this reaction with 50.0 grams of copper(II) sulfide and 50.0 grams of oxygen and you actually produce 33.5 grams of

3. ### Chemistry

Hydrogen Peroxide decomposes to produce oxygen gas and water, What mass of hydrogen peroxide (H2O2) nust decompose to produce 0.77 grams of water?

4. ### Chemistry

How many grams of Na2O are required to produce 160 grams of NaOH?

1. ### Chemistry

5F2(g) + 2NH3(g) ==> N2F4(g) + 6HF(g) a)If you have 66.6 g NH3, how many grams of F2 are required for complete reaction? b)How many grams of NH3 are required to produce 4.65g HF? c)How many grams of N2F4 can be produced from 225g

2. ### Chemistry

3NO2 + H2O = 2HNO3 + NO How many grams of nitrogen dioxide are required to produce 5.89 x 10 to the 3rd power kg HNO3 in excess water?

3. ### Chemistry

The reaction of flourine with ammonia produces dinitrogen tetrafluoride and hydrogen fluoride. 5F2(g) + 2NH3(g) ==> N2F4(g) + 6HF(g) a)If you have 66.6 g NH3, how many grams of F2 are required for complete reaction? b)How many

4. ### chemistry

Given the following equations: 2 H2O2 (aq) → 2 H2O (l) + O2 (g) and C2H4 (g) + 3 O2 (g) → 2 CO2 (g) + 2 H2O (l) The first reaction is the decomposition of hydrogen peroxide into water and oxygen gas. The oxygen gas generated

1. ### Chemistry

1. If you had 1.73 moles of hydrogen (H2) and 0.89 moles of oxygen (O2), which would be the limiting reactant? How many moles of water can you produce from your supply of hydrogen and oxygen? My answers: H2 is the limiting

2. ### Chemistry

Can you tell me if these are right please? When 2.50g of copper reacts with oxygen the copper oxide product has a mass of 2.81g. What is the simplest formula of the copper oxide. I got Cu2O (copper (I) oxide). Aluminum and oxygen

3. ### Stoichiometry

2H2O(l)  O2(g)  2SO2(g) → 2H2SO4(aq) If 50.0 g of sulfur dioxide from pollutants reacts with water and oxygen found in the air, how many grams of sulfuric acid can be produced? How many grams of oxygen are used in the process?

4. ### Chemistry

The reaction of fluorine with ammonia produces dinitrogen tetrafluoride and hydrogen fluoride. 5 F2(g) + 2 NH3(g) N2F4(g) + 6 HF(g) (a) If you have 73.7 g NH3, how many grams of F2 are required for complete reaction? b) How many