Calculations in Chemistry

Calculate the percentage of nitrogen in NH₄NO₃.
(N=14, H=1, O=16)

Calculate the number of moles in 17.6 g of CO2

Calculate the mass in grams in 0.95mol of NaHCO3

Calculate the amount in moles, present in 20g of CaCO3

what is the molar mass of NaHCO3?

What is the relationship between Molar concentration and Mass concentration

50g of Na2CO3 is dissolved in water and the solution is made up to 250ml. Fine the molar concentration of the solution.

What is the mass concentration of KHSO4 of 4.9g in 100cm3 of solution

How many atoms are present in 8.0g of Na?

Why is the standard solution of NaOH cannot be made by measuring a given mass and making it up to the required volume of the solution?

What mass of NaCl will be needed to prepare 0.54g/dm3 of a solution with volume 25cm3