General Chemistry Answers

Lewis diagram of SeO3 -2

The equilibrium constant represents the ratio between the concentration of the product and the concentration of the reactants. If the temperature is constant on what does the equilibrium constant depend?

Silver chloride, calcium carbonate, lead sulfate are compounds that are difficult to digest. The solubility products at 25^oC are: Of silver chloride 1,2 10^-10, of calcium carbonate 4,8 10^-9, lead sulfate 1,9 10^-8, which compound is more difficult to digest?

The general change in the enthalpy of the system during the chemical reaction, does not depend on the number and nature of the intermediate reactions, but on the initial and final state of the system, this is the definition for? A) Hess's law  B) Guidberg-Vages law  C) Leshateli law

An unknown compound contains only C

C , H

H , and O

O . Combustion of 2.50 g

2.50 g of this compound produced 6.10 g

6.10 g 

CO2 and 2.50 g

2.50 g H

2

O

H2O . What is the empirical formula of the unknown compound? Insert subscripts as needed.

How many ions of KCI are dissolved in one liter of a 12.5 molar solution

When the body consumes glucose, it requires oxygen gas. This process is also known as combustion. In a laboratory, a 0.5484 g glucose sample underwent combustion, producing carbon dioxide gas and liquid water.

a. Write the balanced chemical equation for the reaction described above.

b. How many moles of glucose are present before the reaction?

c. What is the mole relationship between glucose and carbon dioxide? Between glucose and water?

d. How many grams of CO2 is produced from the given amount of sample.

How many moles of PCl5 can be produced from 50.0 g of Cl2 (and excess P4)?