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# Converting Grams and Moles

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To do this assignment, use your calculator to do the calculations required. Then invert the calculator to read the message word. Insert the message word into the appropriate space in the statement. Round off all atomic masses to the nearest whole number before using them.

When handing in your assignment, be sure to show all of your workings in the determination of your answers.

1. a. Mass of 100 mol of arsenic =
b. Add mass of 1 mol of cesium to (a) =
c. Add 101 to (b) =
Word answer for 1

2. a. Number of mols in 10 003 g of hydrogen =
b. Add the mass of 3,281 mol of carbon to (a) =
c. Add (1.c.) to (2.b.) =
Word answer for 2

3. a. Mass of 10 mol of germanium =
b. Add mass of 1 mol of Neon to (a) =
c. Subtract mass of a mol of calcium from (b) =
Word answer for 3

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#### Solution Preview

1. a. Mass of 100 mol of arsenic =
b. Add mass of 1 mol of cesium to (a) =
c. Add 101 to (b) =
Word answer for 1

To convert mol to grams, multiply by the molar mass. The molar mass of As is 74.92 g/mol.
a. 100 mol As * 75 g/mol = ...

#### Solution Summary

This solution explains how to convert between mass and moles of elements using the molar mass of those elements.

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See Also This Related BrainMass Solution

## How to do Mole Conversion Problems By Dimensional Analysis

This handout shows 13 completely worked examples of problems that feature mole conversions. All problems are performed using the dimensional analysis method, which focuses on the canceling of units to yield the desired result. Problem types include moles to grams, grams to moles, atoms to grams, grams to liters of a gas at STP, molecules to moles and grams to atoms.

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