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Unit 5 Study guide: Moles & Stoichiometry

Authored by Mariam Ouattara

Chemistry

9th Grade

NGSS covered

Used 1+ times

Unit 5 Study guide: Moles & Stoichiometry
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25 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Given the balanced equation: 2KClO₃ → 2KCl + 3O₂ Which type of reaction is represented by this equation?

synthesis

decomposition

single replacement

double replacement

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which list includes three types of chemical reactions?

condensation, double replacement, and sublimation

condensation, solidification, and synthesis

decomposition, double replacement, and synthesis

decomposition, solidification, and sublimation

3.

FILL IN THE BLANK QUESTION

30 sec • 1 pt

Identify the type of chemical reaction represented by this equation.

2H2 + O2 = 2H2O

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In which type of reaction do two or more substances combine to produce a single substance?

synthesis

decomposition

single replacement

double replacement

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which balanced equation represents a single-replacement reaction?

Mg + 2AgNO₃ → Mg(NO₃)₂ + 2Ag

2Mg + O₂ → 2MgO

MgCO₃ → MgO + CO₂

MgCl₂ + 2AgNO₃ → 2AgCl + Mg(NO₃)₂

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The molar mass of Ba(OH)₂ is

154.3 g

155.3 g

171.3 g

308.6 g

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The gram molecular mass of Ca₃(PO₄)₂ is

246 g

279 g

310 g

342 g

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