How do I go from moles to grams

Here is a conversion:

gram of a substance / moles of substance = molar mass of substance / 1 mole


So if you are asked: How many grams of H2O2 is in 0.7 moles?

First determine the molar mass of the substance. In this case it is 34.01 roughly


x / 0.7 mol = 34.01g / 1 mol



SOLVE for X



x = (34.01)(0.7)
x = 23.8 grams

Understand?

Another poster said this helpful way to remember how to do this equation

Quote:

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Originally Posted by confusedbuzz

A good way to remember the formula is :

Mass (in grams) = Mr. Mole

where Mr. = relative molecular mass
and Moles = number of moles of element

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https://www.askmehelpdesk.com/chemis...es-201917.html

1 mole=6.03X10^23 grams