General Chemistry Answers

If 1.80 kg glucose C6H12O6 is burned completely, how many kg of CO2 is produced?

* Skill - Calculate the amount of water produced in this case.

Compare and contrast the 7 crystal system.

One mole is the amount of any given chemical substance that helps us to measure it's mass conveniently on a scale of C¹² Isotope.

How many particles (atoms of carbon) are present in 12 g of C¹² isotope of a naturally occuring sample of carbon.

calculate the average atomic mass of sulfur if 95.00 of all sulfur atoms have a mass of 31.972 u, 0.76% has a mass of 32.971 u and 4.22% has a mass of 33.967u

Lean meat is marinated and added moisture through brining. In brining, a mixture of salt and water is used to soak the meat for a few hours or days before cooking.

Basic Brine: Make 3880 grams brine for 2.72 kg of meat

Procedure:

a. Mix 250 grams of salt (NaCl) with 3880 grams of water.

b. If you make sweet brine, mix 250 grams of sugar (C₁₂H₂₂O₁₁) to solution of salt and water.

Problem: What is the molal concentration of the brine solution (250 g salt + 3880 g water)?

4.67g of solid silver nitrate are mixed into a 200.0mL solution of 0.500mol/L aqueous potassium sulfate. 

1. Calculate the moles of each reactant 

2. Identify which reactant is the limiting reactant

3. Calculate the moles of each product 

4. Calculate the theoretical yield of solid precipitate 

5. Assuming you get 3.88g of solid precipitate, calculate the percent yield 

To keep homemade ice cream frozen, it is placed in a bucket of ice-water and salt mixture. A mixture is commonly composed of 1.90 kg of salt (NaCl) and 7.25 kg of ice.

Problem: Calculate the mole fraction of NaCl in the mixture until the ice melts.

Lean meat is marinated and added moisture through brining. In brining, a mixture of salt and water is used to soak the meat for a few hours or days before cooking.

Basic Brine: Make 3880 grams brine for 2.72 kg of meat

Procedure:

a. Mix 250 grams of salt (NaCl) with 3880 grams of water.

b. If you make sweet brine, mix 250 grams of sugar (C12H22O11) to solution of salt and water.

Problem: What is the molal concentration of the brine solution (250 g salt + 3880 g water)?

A lagoon has a volume of 1200 m3 and the flow into the lagoon is 2.5 m3/h. What is the rentention time in this lagoon?

One gram of pepper is placed into a 100-mL beaker, and the beaker is filled with water to the 100-mL mark. What is the concentration of pepper in mg/L?