# chemistry

from the balanced equation 4NH3 +7O2 - 4NO2 + 6H2O
How many molecules of water are produced when 2.25 moles of ammonia are completely reacted?

The equation tells us that 4 mol NH3 will produce 6 mols water. That means 2 mols NH3 will produce 3 mols water. How did we do that?
2 mols NH3 x (6 mols H2O/4 mols NH3) = 3 mols H2O. Right? So that factor is what you use.
2.25 mols NH3 x (6 mols H2O/4 mols NH3) = ?? mols H2O.
We know there are 6.02 x 10^23 molecules in one mol. So how many molecules will be in ?? mol H2O.

2.25 mols NH3 x (6 mols H2O/4 mols NH3) = ?? mols H2O
3.4mols
3.4 x 6.02 x 10^23=2.05?

2.25 mols NH3 x (6 mols H2O/4 mols NH3) = ?? mols H2O
3.4mols My calculator gives 3.375 mols. You are allowed 3 places (since there are 3 in the original 2.25 number; therefore, rounding to 3.4 is too harsh. It should be rounded to 3.38 mols.

3.4 x 6.02 x 10^23=2.05?
What did you do with the 10^23?
3.38 x 6.02 x 10^23 = 2.03 x 10^24. Do that on your calculator. Check my arithmethic. I have trouble seeing the calculator buttons.

I got 2.03 x 10^25

No, 2.03 x 10^24 is correct. You may have punched in the wrong exponent.

1. 👍 0
2. 👎 0
3. 👁 452

## Similar Questions

1. ### Chemistry

If 8.00 moles of NH3 reacted with 14.0 moles of O2, how many moles of H2O will be produced? 4NH3 (g) + 7O2 (g) --> 4NO2 + 6H2O (g)

asked by Argh on December 11, 2011
2. ### Chemistry

2C2H6(g) + 7O2(g) → 4CO2(g) + 6H2O(g) In the equation, if 14 L of ethane (C2H6) and 14 L of oxygen (O2) combined and burned to completion, which gas will be leftover after the reaction, and what is the volume of that gas

asked by Giselle Meza on October 6, 2015
3. ### Chemistry

Refer to the following equation: 4NH3 + 7O2= 4NO2 +6HO, How many moles of ammonia would be required to produce 11.9 mol of water? Can you please walk me through the steps on how to figure this problem?

asked by Jessica on March 16, 2012
4. ### Chemistry

How much heat is absorbed/released when 35.00 g of NH3(g) reacts in the presence of excess O2(g) to produce NO(g) and H2O(l) according to the following chemical equation? 4NH3(g)+5O2(g)--->4NO(g)+6H2O(l) DeltaH=1168kj

asked by Daqa on March 18, 2010
5. ### Chemistry

Consider the following reaction: 4NH3 + 7O2 (arrow) 4NO2 + 6H2O. A) How many moles of NH3 react with 5.64 mol of O2? B)How many moles of NO2 are obtained from 3.27 mol of O2? C) How many moles H2O will be produced from 8.95 g of

asked by Apryl on June 30, 2014
1. ### chemistry

Question 1. A Compound Containing 3 Atoms Of Carbon & 8 Atoms Of Hydrogen Is Combined In A Reaction With Oxygen Molecules. The 2 End Products Of This Equation Are Carbon Dioxide &water. What Element Should You Look At 1st In

asked by Jen on September 23, 2008
2. ### Chemistry

Carbon dioxide gas and liquid water form solid glucose (C6H12O6) and oxygen gas during photosynthesis. Chlorophyll absorbs light in the 600-700 nm region. a) Write a balanced thermochemical equation for the formation of 1.00 mol

asked by Ceamus Angelina on March 13, 2018
3. ### Chemistry

4NH3+5O2 = 4NO + 6 H20 If a container were to have 10 molecules of O2 and 10 molecules of NH3, initially, how many total molecules (reactants plus products) would be present in the container after this reaction goes to completion?

asked by Margaret on September 17, 2010
4. ### Chemistry

given the balanced equation representing a reaction: 4NH3+5O2-->4NO+6H2O what is the minimum number of moles of O2 that are needed to completely react with 16 moles of NH3? (1)16 mol (2)20.mol (3)64 mol (4)80. mol i think its 2

asked by Destinee on January 2, 2011
5. ### Chemistry

A compound containg 3 atoms of carbon and 8 atoms of hydrogen is combined in a reaction with oxygen molecules. The two end products of this equation are carbon dioxide (CO2) and water. What element should you look at first in

asked by Mickey on July 4, 2008
6. ### Chemistry

Which of the following statements about balanced equation is false? In a balanced reaction: Group of answer choices net charge must be balanced on both sides of the reaction arrow atoms must be balanced on both sides of the

asked by Boi on June 5, 2020