Chemistry Answers

Calculate the number of sodium ions, perchlorate ions, Cl atoms, and O atoms in 82.4 g of sodium perchlorate. Enter your answers in scientific notation.

The equilibrium constant for the reaction at 700.0 K is 0.44. What is the concentration of carbon dioxide gas (CO2) and hydrogen gas (H2), if [H2O] = 0.16 mol/L, and [CO] = 0.15 mol/L? H2O (g) + CO (g) = CO2 (g) + H2 (g)

How many grams NH3 are produced when you have 2.75 grams of N2

Assuming ideal solution behavior, what is the boiling point of a 033m solution of a nonvolatile solute in benzene?

The osmotic pressure of 250mL of an aqueous solution containing 0.150g of the enzyme lysozyme is found to be 0.0013atm at 24.850 Calculate the molar mass of lysozyme.

How many grams of Lactic acid (C6H10O5) should be dissolved in 650g of cyclohexane (C6H12) to raise the boiling point to 84.910C? The normal boiling point of cyclohexane is 810C and its molal boiling point is 2.75 0C/m.

You add 1 kg of ethylene glycol (C2H6O2) antifreeze to 4500g of H2O in your car’s radiator. What would be the freezing point of the solution?

A solution prepared by adding 10g of an unknown non-volatile, non-electrolyte solute to 150 g of water. The Boiling point of the solution is elevated by 0.433 0C above the normal boiling point of the solvent. What is the molar mass of the unknown substance?

What is the vapor pressure of the pure solvent if the vapor pressure of a solution of 15g sucrose (C12H22O11) in 100g of ethanol (C2H5OH) is 58 mmHg?

5 mL of nitric acid, HNO3, are required to react with 50 mL of a 1.25 M Barium hydroxide, Ba(OH)2 solution:

2 HNO3 (aq) + Ba(OH)2 (aq) --> 2 H2O (aq) + Ba(NO3)2 (aq)

Determine the concentration (Molarity) of the nitric acid solution (HNO3).