General Inorganic Chemistry - Solutions Concentration

What did the child's mother use to boil the potatoes, eggs, and coffee beans?

What was the child's emotional state at the beginning of the story?

The child's mother was a chef de partie.

The child's mother asked him to touch the ______ after they were boiled.

What was the state of the egg after it was boiled?

Match the items with their corresponding states after boiling:

What does the child's mother's actions in the kitchen symbolize?

The story primarily focuses on scientific principles related to the boiling process.

What are the three items mentioned in the story that react differently to boiling water?

The story suggests that reacting to adversity in a positive way is like being the potato because it softens and becomes more malleable.

What is the main lesson or moral of the story?

The story compares the boiling water to the ______ that life throws at us.

Match the items with their reactions to boiling water:

Which of these is NOT a way to express the amount of solute present in a solution?

A mixture is a combination of two or more substances that chemically combine to form a new compound.

What concept does the story introduce about the reaction of ground coffee beans in boiling water, in relation to chemistry?

The molality of a solution is defined as the number of moles of solute per ______ of solvent.

In preparing the ethanol-water solution, what is the mass of ethanol needed to prepare 100.0 mL of the solution?

Calculate the volume percent of the ethanol-water solution.

The mole fraction of a component in a solution is the ratio of the ______ of that component to the total moles of all components in the solution.

The molality of a solution is independent of temperature.

Match the concentration units with their corresponding definitions:

What is alcohol proof a measure of?

A 70-proof whiskey contains 70% alcohol by volume.

Which of the following is NOT a common unit of concentration?

What is the molarity of a solution containing 12.6 grams of HNO3 in 1.0-liter solution?

Match the following terms with their definitions:

What is the mole fraction of ethanol (C2H5OH) in a solution prepared by mixing 1.00 g ethanol with 100.0 g water?

What is the mass percent of ethanol in a solution prepared by mixing 1.00 g ethanol with 100.0 g water?

The intoxicating agent in Christmas wines is ______.

The mole fraction of a component in a solution is always less than 1.

The unit of concentration that represents the mass of solute per mass of solution, expressed in parts per million (ppm), is called ______.

Molarity is defined as the amount of solute in moles per liter of solution.

Which of the following units of concentration is NOT volume-based?

Match the following concentration units with their corresponding definitions.

What is the molarity of a solution prepared by dissolving 25.0 g of NaCl in enough water to make 500.0 mL of solution?

What is the correct unit for molality?

Calcium chloride (CaCl2) is used as a drying and dehumidifying agent. If you dissolve 50.0 g of CaCl2 in 400.0 g of water, the molality of the solution will be ______ m.

The concentration unit ppm (m/m) is more suitable for expressing the concentration of trace amounts of substances in a solution compared to molarity.

Describe the difference between molarity and molality.

What is the concentration of calcium ions (Ca2+) in a pill weighing 3.50 g, containing 40.5 mg of Ca2+, expressed in ppm (m/m)?

Which of the following is NOT a way to express the concentration of a solution?

A solution with a higher molarity has a higher concentration of solute than a solution with a lower molarity.

What is the difference between molarity and molality?

The ______ of a solution is a measure of its concentration.

Match the following concentration units with their descriptions:

Which of the following is a good way to prepare a 0.5 M solution of CaCO3?

A solution with a mole fraction of 0.25 for the solute has a higher concentration than a solution with a mole fraction of 0.10 for the solute.

What is the molarity of a solution prepared by dissolving 10.0 g of NaCl in enough water to make 250 mL of solution?

The ______ is often used to express the concentration of alcoholic beverages.

Match the following solutions with their concentrations: