Module 3.2 Moles Flashcards

1
Q

Mole stands for ?

A

Molecular Weight (MW)

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2
Q

Moles and grams are related based on the ?

A

Molecular Weight of a compound

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3
Q

The number of grams in a substance will always be greater than the number of ?

A

Moles

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4
Q

To go from Moles to grams you ? by the ?

A

Multiply

Molecular Weight

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5
Q

To go from Grams to Moles you ? by the ?

A

Divide

Molecular Weight

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6
Q

What is the MW (Moles)

10grams of Ca₃(PO₄)₂

A

First find the MW (previous module)
MW = 310.18
We are given the grams and need Moles
Larger (grams) to smaller (moles) we divide 10g / 310.18 = 0.03224 moles

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7
Q

What is the Grams of

0.152 moles of Na₂SO₄

A

First find the MW (previous module)
MW = 142
Going from smaller (Moles) to larger (Grams) so we multiply 0.152 * 142 = 21.584g

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