Chemical Calculations

What is the relative atomic mass of metal X?

If metal x has a relative atomic mass of 24, what is it?

The copper chloride solution used in the investigation contained 300 grams per dm³ of solid CuCl₂ dissolved in 1 dm³ of water.

The students used 50 cm³ of copper chloride solution in each experiment.

Calculate the mass of solid copper chloride used in each experiment.

2Na + Cl₂ --> 2NaCl

4.6 g of sodium reacts with chlorine to produce 11.7 g of sodium chloride.

What mass of chlorine reacted?

Calculate the mean mass of solid after heating.

Give your answer to 3 significant figures.

A solution of hydrochloric acid contains 3.2 g of hydrogen chloride in 50 cm³

Calculate the concentration of hydrogen chloride in g per dm³

Calculate the percentage by mass of oxygen in ammonium nitrate (NH₄NO₃).

Relative atomic masses (A_r): H = 1 N = 14 O = 16

Relative formula mass (M_r): NH₄NO₃ = 80

Calculate the mean temperature change for metal Y.

Do not include the anomalous result in your calculation.

100 cm³ of the copper sulfate solution contains 1.8 g of copper sulfate.

Calculate the mass of copper sulfate in 25 cm³ of this copper sulfate solution.

Calculate the mass of chlorine that reacts with 3.94 g of gold.