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## What must you do before determining the mole ratio?

The law of conservation of mass requires that **both sides of the equation must have the same number of atoms of each element**, and this provides the clue on how to find the mole ratio. Multiply each side of the equation by a factor that balances the equation.

## How do you find the mole ratio?

Find the ratio or the moles of **each element by dividing the number of moles of each by the smallest number of moles**. There are fewer moles of oxygen than any other element, so we will assume one mole of oxygen to establish the ratios.

## What is the first thing you must do to solve a stoichiometry problem?

the first step in any stoichiometric problem is to always ensure that **the chemical reaction you are dealing with is balanced**, clarity of the concept of a ‘mole’ and the relationship between ‘amount (grams)’ and ‘moles’.

## What is the mole ratio of O2 to co2?

The mole ratio tells you in what exact proportions the reactans will mix and exactly how much products their reaction will produce. In this case, the mole ratio between oxygen and carbon dioxide is **5:3** , i.e. you need 5 moles of oxygen to produce 3 moles of carbon dioxide.

## What is the formula for moles to grams?

In order to convert the moles of a substance to grams, you will need to **multiply the mole value of the substance by its molar mass**.

## What is mole ratio?

A common type of stoichiometric relationship is the mole ratio, which **relates the amounts in moles of any two substances in a chemical reaction**. We can write a mole ratio for a pair of substances by looking at the coefficients in front of each species in the balanced chemical equation.

## Why do we use mole ratio?

Mole ratios **allow comparison of the amounts of any two materials in a balanced equation**. Calculations can be made to predict how much product can be obtained from a given number of moles of reactant.

## What is a mole ratio Quizizz?

The **ratio of a reactant / product to a different one** – compared by the number of particles.

## How do you solve a stoichiometry problem?

**Almost all stoichiometric problems can be solved in just four simple steps:**

- Balance the equation.
- Convert units of a given substance to moles.
- Using the mole ratio, calculate the moles of substance yielded by the reaction.
- Convert moles of wanted substance to desired units.

## Where stoichiometry is used today?

Stoichiometry is at the heart of the production of many things you use in your daily life. **Soap, tires, fertilizer, gasoline, deodorant, and chocolate bars** are just a few commodities you use that are chemically engineered, or produced through chemical reactions.