# What is the mole to mole factor?

The balanced equation for the reaction of interest contains the stoichiometric ratios of the reactants and products; these ratios can be used as conversion

**factors**for**mole**-to-**mole**conversions. Stoichiometric ratios are unique for each chemical reaction.A.

### How do you convert from moles to moles?

Avogadro's number is a very important relationship to remember: 1

**mole**= 6.022×1023 6.022 × 10 23 atoms, molecules, protons, etc. To convert from**moles**to atoms, multiply the molar amount by Avogadro's number. To convert from atoms to**moles**, divide the atom amount by Avogadro's number (or multiply by its reciprocal).#### How do you go from moles to grams?

**There are three steps to converting moles of a substance to grams:**- Determine how many moles are given in the problem.
- Calculate the molar mass of the substance.
- Multiply step one by step two.

#### How do you find how many moles are in a compound?

Start with the number of grams of each element, given in the problem. Convert the mass of each element to**moles**using the molar mass from the periodic table. Divide each**mole**value by the smallest number of**moles calculated**. Round to the nearest whole number.#### How do you determine the molecular formula?

- Calculate the empirical formula mass. You determine this number by finding the mass of HO (1 hydrogen atom and 1 oxygen atom).
- Divide the gram molecular mass by the empirical formula mass.
- Multiply each of the subscripts within the empirical formula by the number calculated in Step 2.

B.

### Why do you need to use moles to solve stoichiometry problems?

Big, because atoms and molecules are way too small to count, so

**we**mass large numbers of them instead, and**use**molar mass to convert to the NUMBER of**moles**of them. This number is then used in a ratio conversion based on the**mole**ratios in the balanced chemical equation.#### Why do you need to use moles to solve stoichiometry problems?

Big, because atoms and molecules are way too small to count, so**we**mass large numbers of them instead, and**use**molar mass to convert to the NUMBER of**moles**of them. This number is then used in a ratio conversion based on the**mole**ratios in the balanced chemical equation.#### What steps must be taken before any stoichiometry problem is solved?

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.#### How do you convert grams to Mole?

Using a calculator, divide the number of**grams**by the molar mass. The result is the number of**moles**in your element or compound. For example, imagine you have 2 g of water, or H_{2}O, and you want to**convert**it to**moles**. The molecular mass of H_{2}O is 18g/**mol**.

C.

### What is the mole to mole ratio?

A

**mole ratio**is ?the**ratio**between the amounts in**moles**of any two compounds involved in a chemical reaction. The**mole ratio**may be determined by examining the coefficients in front of formulas in a balanced chemical equation. Also Known As: The**mole ratio**is also called the molar**ratio**or**mole-to-mole ratio**.#### What is the limiting reagent?

The**limiting reagent**(or**limiting reactant**, LR) in a chemical reaction is the substance that is totally consumed when the chemical reaction is complete. The amount of product formed is limited by this**reagent**, since the reaction cannot continue without it.#### What is the excess reagent?

The**excess reactant**is the**reactant**in a chemical reaction with greater amount than necessary to react completely with the**limiting reactant**. It is the**reactant**(s) that remain after a chemical reaction has reached equilibrium.#### Why is it useful to have a mole ratio?

**Mole ratios**are**important**because**mole ratios**allow you change**moles**of a substance to**moles**of another substance. The**mole ratio**is the magic that changes from A to B. The**mole ratios**come from the chemical formula or equation.

Updated: 2nd October 2019