Chemistry Answers

If the true value for % K2CO3  in the sample is 90.00% , what is the average %Error? 

50 ml of an alkaline water sample requires 3.7 ml of 0.02 N HCL upto phenolphthalein end point and 4.5 ml of complete Neutralization. Find the type and amount of alkalinity in water sample.

1.How much heat is absorbed by liquid water that weighs 550 grams as it is heated from 25℃ to 95℃ ?

if the hydrogen ion concentration is 4.7 x 10-8 what is the ph

What is the molarity of a 10 L solution that contains 3.5 moles of potassium chloride solution?

An acid solution contains 18 kg of water and pure hydrochloric acid (HCl) , Its concentration is 0.60 mol/kg of solvent. Compute for the number of moles of solute contained in the solution.

What is the mole fraction of sodium chloride and water in a solution, prepared by mixing 256 g of sodium chloride and 176 g water? (Na=23g/mol Cl= 35g/mol H=1g/mol o=16g/mol)

Express the concentration of solution in % w/v containing 12 g sodium chloride and 50 ml of water

How many liters of ammonia (NH3) are contained in 800 ml of a solution that is 12% ammonia by volume?

50 ml of an alkaline water sample requires 3.7 ml of 0.02 N HCL upto phenolphthalein end point and 4.5 ml of complete Neutralization. Find the type and amount of alkalinity in water sample.