Mr Canning´s Solutions Quiz

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| By MrCanning

MrCanning

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Quizzes Created: 3 | Total Attempts: 2,284

| Attempts: 348

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1/10 Questions

Sugar is a solute in a cup of coffee.
- True
- False

About This Quiz

Mr. Canning's solutions quiz explores fundamental chemistry concepts focusing on solutes, solvents, and solutions. It assesses understanding of how substances interact in various states and compositions, enhancing learners' grasp of chemical solutions.

2.

Moles = mass (g) /

Explanation
The formula for calculating moles is mass (g) divided by molecular mass or molar mass. The terms "molecular mass," "molar mass," "Molar mass," and "Molecular Mass" all refer to the same concept, which is the mass of one mole of a substance. Therefore, any of these terms can be used interchangeably in the formula to calculate moles.

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3.

The gas called is a solute in coca cola.

Explanation
The gas that is a solute in Coca Cola is carbon dioxide. Carbon dioxide is commonly used in carbonated beverages like Coca Cola to create the fizz and bubbles. It is represented by the chemical formula CO2.

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4.

Molality is the number of moles divided by the mass ( ) of solvent.

Explanation
Molality is a measure of concentration that represents the number of moles of solute per kilogram of solvent. In this case, the correct answer options are all units of mass that can be used to express the mass of the solvent in the molality equation. Therefore, the answer options "kilograms," "Kilograms," and "Kg" are all correct.

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5.

What are the units of molecular mass (molar mass)?
- Mol/g
- G mol
- G/mol
- G
Correct Answer

A. G/mol

Explanation

The units of molecular mass (molar mass) are expressed as grams per mole (g/mol). This means that the mass of a substance is measured in grams, while the amount of substance is measured in moles. The ratio of the mass to the amount of substance gives the molar mass, which is commonly used in chemical calculations and stoichiometry.

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6.

A solute is the component...
- Added to water
- Dissolved in the solution
- Dissolved in the solvent
- Added to the other solute
Correct Answer

A. Dissolved in the solvent

Explanation

A solute is the component that is dissolved in the solvent. In a solution, the solute is the substance that is present in a smaller amount and gets dissolved by the solvent. The solvent is the substance that is present in a larger amount and dissolves the solute. Therefore, the correct answer is "dissolved in the solvent."

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7.

Molarity is the number of moles of solute divided by the volume of the solvent.
- True
- False
Correct Answer

A. False

Explanation

It must be the volume of solution.

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8.

What is the solvent in blood?
- Red blood cells
- Plasma
- Salts
- Water
Correct Answer

A. Red blood cells

Explanation

The solvent in blood is not red blood cells, but rather plasma. Plasma is the liquid component of blood that carries red blood cells, white blood cells, platelets, and other substances throughout the body. It is mainly composed of water, electrolytes (salts), proteins, hormones, and waste products. Red blood cells are the most abundant cellular component of blood and are responsible for carrying oxygen to the body's tissues. However, they are not the solvent in blood.

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9.

Which of these can be used to calculate a concentration?
- Grams per litre
- Molarity
- Molality
- Molar fraction
Correct Answer(s)

A. Grams per litre
A. Molarity
A. Molality
A. Molar fraction

Explanation

Grams per litre, Molarity, Molality, and Molar fraction can all be used to calculate concentration. Grams per litre is a measure of the mass of solute per unit volume of solution. Molarity is the number of moles of solute per litre of solution. Molality is the number of moles of solute per kilogram of solvent. Molar fraction is the ratio of the number of moles of a component to the total number of moles in the solution. Each of these measures allows for the determination of concentration in different ways.

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