Chapter Quiz 5-6

Calculate the percent yield if the actual yield is 25g and the theoretical yield is 30g.

• 40%

• 20%

• 83.33%

• 30%

Tags

NGSS.HS-PS1-7

In a reaction, if 2 moles of A react with 3 moles of B, what is the mole ratio of A to B?

• 1:2

• 3:2

• 4:3

• 2:3

Tags

NGSS.HS-PS1-7

When reacting Na with Cl₂, we calculated that the theoretical yield should be 13 grams. Our actual yield was 12.5 grams. What is the percent yield?

• 90.4%

• 104%

• 96.15%

• 1.04%

Tags

NGSS.HS-PS1-7

What type of reaction is represented by the equation: A + B → AB?

• Combustion

• Single replacement

• Decomposition

• Synthesis (combination)

What is the law that is ensured by balancing a chemical equation?

• Law of Conservation of Energy

• Law of Multiple Proportions

• Law of Conservation of Mass

• Law of Definite Proportions

Tags

NGSS.HS-PS1-7

What type of reaction is represented by the equation: AB → A + B?

• Combustion

• Single replacement

• Decomposition

• Synthesis (combination)

What are the coefficients that will balance the skeleton equation below?

__Na + __F₂ → __NaF

• 1, 2, 1

• 2, 1, 2

• 1,1,1

• 2,2,2

Tags

NGSS.HS-PS1-7

During the process of reduction, _________________

• protons are lost.

• protons are gained.

• electrons are lost.

• electrons are gained

• neutrons are lost.

Identify the species reduced in the following reaction.

Fe_(s) + 2 Ag⁺_(aq) → Fe²⁺_(aq) + 2 Ag_(s)

• Fe

• Ag

• none of these

• None of the above

Is this an example of an organic or inorganic compound?

• Organic
• Inorganic

Tags

NGSS.HS-LS1-6