Solutions and Solubility
You dissolve 30 grams of sugar into 100 mL of water. What type of mixture would this create?
Homogenous Mixture
You’re boiling pasta and you decide to add 58.44 grams of salt (NaCl) into the water. How many moles of salt did you add
1 mole
You mix 2 moles of vinegar (CH₃COOH) with baking soda (NaHCO₃) to make a volcano. What gas is produced?
Carbon Dioxide (CO2)
You’re baking cookies and the recipe shows to add 2 moles of sugar (C₁₂H₂₂O₁₁). How many molecules of sugar are in the cookie dough?
1.204 × 10²⁴ molecules
You ate too much spicy food and got heartburn! To neutralize the stomach acid (HCl), which type of substance should you take?
a Base
When adding salt to pasta, what is the salt called in this mixture?
Solute
A can of soda contains 39 grams of sugar (C₁₂H₂₂O₁₁). What is the approximate number of moles of sugar in the soda?
0.11 moles
You left your bike in the rain and it rusted. If 4 moles of Iron react with oxygen, how many moles of rust are formed? (Fe₂O₃)?
2 moles
You take a deep breath. If the air contains about 0.2 moles of oxygen gas (O₂), how many molecules of oxygen enter your lungs?
1.204 × 10²³ molecules
You mix lemon juice (acidic) with baking soda (basic) and see bubbles forming. What gas is produced in this neutralization reaction?
Carbon Dioxide (CO2)
What is the Formula of Solubility
Ksp
A scuba tank contains 32 grams of oxygen gas (O₂). How many moles of oxygen does the diver have?
1 mole
You and your family are making s’mores. If you burn 1 mole of marshmallows (C₆H₁₂O₆) in oxygen, how many moles of CO₂ are created?
6 moles
A jeweler melts down 3 moles of gold (Au) to make rings. How many atoms of gold does the jeweler use?
1.807 × 10²⁴ atoms
Your milk has gone bad and tastes sour. What type of substance is responsible for the sour taste?
In the winter, salt is used on roads to melt ice, how does this work?
Salt lowers the freezing point of water.
A space shuttle uses 34 grams of hydrogen fuel (H₂). How many moles of hydrogen gas are in the fuel?
17 moles
Fireworks contain potassium nitrate (KNO₃). If 3 moles of KNO₃ reacted with carbon, how many moles of oxygen gas (O₂) are created?
1.5 moles
A vitamin C tablet contains 0.01 moles of ascorbic acid (C₆H₈O₆). How many molecules of vitamin C are in the tablet?
6.022 × 10²¹ molecules
A swimming pool has a pH of 5.5 which is too acidic. What should be added to make the water neutral (pH 7)?
A base like sodium bicarbonate (baking soda)
When too much salt is added into water and falls to the bottom, what is created?
A supersaturated solution
A doctor prescribes a patient 180 mg of aspirin (C₉H₈O₄). If the molar mass of aspirin is 180 g/mol, How many moles of aspirin is the patient taking?
0.001 moles
A propane grill burns 2 moles of propane (C₃H₈) in oxygen. How many moles of carbon dioxide (CO₂) are produced?
6 moles
A car emits about 2 moles of carbon dioxide (CO₂) per mile. If a car is driven 100 miles, how many molecules of CO₂ are released into the air?
1.204 × 10²⁶ molecules
Plaque on your teeth produces acids that can cause cavities. How does toothpaste help prevent this?
Toothpaste! Which contains bases that neutralize acids