According to Bronsted and Lowry, what defines an acid?

A substance that donates a proton

A substance that accepts a proton

A substance that produces hydroxide ions

What is the most common acid and base on Earth?

Hydrochloric acid and sodium hydroxide

What happens when an acid is added to water?

It dissociates, forming H3O+ and a negative ion

How does sulfur dioxide contribute to acid rain?

By reacting with water and oxygen to form sulfuric acid

By directly precipitating as sulfuric acid

By increasing atmospheric pressure

What is the role of limestone in flue gas desulfurization?

It reacts with sulfur dioxide to form calcium sulfate

It acts as a catalyst for sulfur dioxide conversion

It absorbs carbon dioxide from the air

It increases the efficiency of coal burning

What is a significant challenge in measuring the sensitivity of Azidoazide Azide?

It is too sensitive to measure.

What makes Chlorine Trifluoride more dangerous than fluorine gas?

It is a better oxidizer than oxygen.

It is less stable and more reactive.

What was the intended use of 'Substance N' by the Nazis?

To create a new type of explosive

What was the main reason the Nazis discontinued experiments with 'Substance N'?

It was too dangerous to handle.

It was too expensive to produce.

What is the purpose of adjusting coefficients to the lowest whole number ratios?

To comply with scientific notation

How are polyatomic ions treated when found on both sides of the equation?

Ignored in the balancing process

Balanced using special coefficients

When balancing a chemical equation, what does multiplying the subscript by the coefficient adjust?

The number of each type of atom

What should be done if an element appears alone in a chemical equation?

It should be removed from the equation

Which rule must be followed when balancing chemical equations?

Never change or add a subscript

Coefficients can be placed anywhere

Balance polyatomic ions separately

What does an atomic inventory help identify?

The temperature needed for a reaction

Why is it necessary to balance chemical equations?

To comply with the law of conservation of mass

To speed up the reaction process

To use fewer chemicals in reactions

To make equations easier to read

What formula is used to calculate percent yield?

(Actual Yield / Theoretical Yield) x 100%

(Theoretical Yield - Actual Yield) x 100%

(Actual Yield - Theoretical Yield) x 100%

(Theoretical Yield / Actual Yield) x 100%

How is the actual yield of a reaction typically determined?

By measuring the products formed in the experiment

Through theoretical calculations

It is always given in the problem statement

By calculating the difference between the reactants and products

What is the role of the limiting reactant in a chemical reaction?

It is always completely consumed

It determines the maximum amount of product that can be formed

Which reactant is used to calculate the theoretical and percent yield?

The reactant with the highest mass

The reactant with the lowest molar mass

Unit 4 Biowork Lesson

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1. Which would be part of an employee’s training before using any hazardous chemicals?a. All of these are part of an employee's trainingb. Chemical waste disposal proceduresc. Location of safety data sheetsd. First aid training

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1. Which would be part of an employee’s training before using any hazardous chemicals?
a. All of these are part of an employee's training
b. Chemical waste disposal procedures
c. Location of safety data sheets
d. First aid training