Unit 7: Molecular Formula and Hydrates

Presentation

•

Chemistry

•

10th - 12th Grade

•

Medium

•

NGSS

HS-PS1-7

Standards-aligned

Allyson Holloway

Used 6+ times

FREE Resource

7 Slides • 6 Questions

Multiple Choice

What is the molecular formula if the empirical formula is CH₂O and the molecular molar mass is 180.18?

CH₂O

C₂H₄O₂

C₄H₈O₄

C₆H₁₂O₆

Multiple Choice

EF = CF₂Molecular formula mass = 192
MF =

C₄F₈

C₄F

CF₈

C₂F₄

Multiple Choice

A compound is a hydrate when it...

a substance is completely dehydrate, removig all water

Set number of salt molecules loosely bonded to an ionic compound

Set number of water molecules loosely bonded to an ionic compound

repels water from the compound

Multiple Choice

Name the following ionic compound: MgSO₄*7H₂O

magnesium sulfate dihydrate

magnesium sulfate hexahydarte

magnesium sulfate heptahydrate

Multiple Choice

Na₂CO₃ · 10H₂O is known as sodium carb ______

Hydroxide

Hydrate

Decahydrate

None of the above

Multiple Choice

A 15.67 g sample of a hydrate of magnesium carbonate was heated to drive off the water. The mass was reduced to 7.58 g. What is the formula of the hydrate?

MgCO₃ · 5H₂O

MgCO₃ · 4H₂O

MgCO₃ · 6H₂O

MgCO₃ · 1H₂O

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