🧪 Chemistry Lab
SPM Equations & Calculations
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Practice level Choose direct or two-step conversions.
Amount in moles measuring large quantities of very small entities

Click a conversion card to choose a practice activity.

Moles → Mass

Guided calculation

Multiply the number of moles by the molar mass.

Question 1 of 5

Calculate the mass of 2 mol of H₂O.

Score: 0
1 2 3 4
1
Understand the question

What quantity are you being asked to find?

2
Choose the operation

Starting from moles, should you multiply or divide?

3
Find the conversion factor

Calculate the molar mass

g mol⁻¹
4
Substitute and calculate

Use the values in the equation

m = n × M
g
✓

Moles to mass complete

You identified the destination, selected the operation, found the conversion factor and calculated the answer.

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