# Help with Stoichiometry

• Rawlzilla

#### Rawlzilla

As early as the 1938, the use of NAOH was suggested as a means of removing CO2 from the cabin of a spacecraft according to the reaction:

2NaOH+CO2--->Na2CO3+H2O

If the average human body discharges 592g of CO2 per day, how much NaOH is needed each day for each person in the spacecraft ?

This is a homework problem and belongs in the homework section. Nevertheless, I'll help you answer it.

You know that stoichiometry only works with moles, right? So you need those grams to be moles. Here's a constant to help out a bit...

mw CO2 = C + 2*O = 44.0096 g/mol

Then find the moles of NaOH per CO2 and go from there.

## 1. What is stoichiometry?

Stoichiometry is the branch of chemistry that deals with the quantitative relationships between reactants and products in a chemical reaction.

## 2. Why is stoichiometry important?

Stoichiometry allows us to understand and predict the amount of products that will be formed in a chemical reaction, as well as the amount of reactants needed for a desired outcome. It is also important in determining the efficiency of a reaction and identifying any limiting reactants.

## 3. How do you solve stoichiometry problems?

To solve a stoichiometry problem, you first need to write a balanced chemical equation for the reaction. Then, use the given information and the mole ratio from the balanced equation to calculate the desired quantity of product or reactant.

## 4. What is a mole ratio?

A mole ratio is a conversion factor that relates the number of moles of one substance to the number of moles of another substance in a chemical reaction. It is determined from the coefficients of the balanced chemical equation.

## 5. How do you determine the limiting reactant in a stoichiometry problem?

To determine the limiting reactant, you need to compare the moles of each reactant present to the moles needed for complete reaction. The reactant with the smaller number of moles is the limiting reactant, as it will be completely used up in the reaction while the other reactant will be left over.