# Feb 5 Chem Quiz

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Quizzes Created: 1 | Total Attempts: 151
Questions: 6 | Attempts: 151

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Review of moles

• 1.

### What is the molar mass of CH4?

• A.

12 g/mol

• B.

24g/mol

• C.

20 g/mol

• D.

16 g/mol

• E.

None of the above

D. 16 g/mol
Explanation
The molar mass of CH4 is 16 g/mol because carbon has a molar mass of 12 g/mol and hydrogen has a molar mass of 1 g/mol. Since there are four hydrogen atoms in CH4, the total molar mass is 12 g/mol + 4 g/mol = 16 g/mol.

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• 2.

### A + B -> AB represents which type of reaction?

• A.

Synthesis

• B.

Decomposition

• C.

Single-replacement

• D.

Double-replacement

• E.

Combustion

A. Synthesis
Explanation
The given chemical equation A + B -> AB represents a synthesis reaction. In a synthesis reaction, two or more reactants combine to form a single product. In this case, the reactants A and B combine to form the product AB.

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• 3.

### A bicycle mechanic has 10 frames and 16 wheels in the shop. How many complete bicycles can he assemble using these parts?

• A.

2

• B.

4

• C.

6

• D.

8

• E.

10

D. 8
Explanation
The bicycle mechanic can assemble 8 complete bicycles using the 10 frames and 16 wheels in the shop. Each bicycle requires 1 frame and 2 wheels. Since there are only 10 frames available, the mechanic can assemble a maximum of 10 bicycles. However, since each bicycle requires 2 wheels, a total of 20 wheels would be needed for all 10 bicycles. Since there are only 16 wheels available, the mechanic can only assemble 8 complete bicycles.

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• 4.

### A recipe calls for one cup of milk and 4 eggs. If you want to triple the recipe, how many eggs do you need?

• A.

3 cups

• B.

12 eggs

• C.

12 cups

• D.

3 eggs

B. 12 eggs
Explanation
If the recipe calls for one cup of milk and 4 eggs, and we want to triple the recipe, we need to multiply the number of eggs by 3. Therefore, 4 eggs multiplied by 3 equals 12 eggs. So, if we want to triple the recipe, we will need 12 eggs.

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• 5.

### A recipe calls for 1 cup of milk and 4 eggs. If you only have 2 eggs, how much milk should you use?

• A.

1 cup

• B.

2 cups

• C.

1/2 cup

• D.

4 cups

C. 1/2 cup
Explanation
If the recipe calls for 4 eggs and you only have 2 eggs, it means you have half of the required amount of eggs. Therefore, it would make sense to also use half of the required amount of milk, which is 1 cup. Hence, the correct answer is 1/2 cup.

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• 6.

### The 1 cup milk/ 4 egg recipe produces 12 cupcakes. How many cupcakes would it produce if you use 2 cups of milk and 8 eggs?

• A.

12

• B.

24

• C.

36

• D.

2

B. 24
Explanation
If the original recipe produces 12 cupcakes using 1 cup of milk and 4 eggs, then doubling the amount of milk and eggs would also double the number of cupcakes produced. Therefore, using 2 cups of milk and 8 eggs would produce 24 cupcakes.

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• Current Version
• Mar 21, 2023
Quiz Edited by
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• Feb 01, 2010
Quiz Created by
Kellygramling