Moles Sets Random Retrieval

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Moles Sets Random Retrieval

This quiz contains all the questions in the Moles Sets section. The website will pick 10 questions at random.

1 / 10

If 1 mole of potassium bromide (KBr) is dissolved in water to make 2 dm3of solution, what is the concentration of the solution?

2 / 10

What is the mass of 120 cm3 of nitrogen if all volumes are measured at r.t.p?

3 / 10

NH3 + O2 => NO + H2O

4 / 10

MnO2 + HCl => MnCl2 + H2O + Cl2

5 / 10

NaHCO3 => Na2CO3 + CO2 + H2O

6 / 10

Combustion of 7.8g of potassium produced 14.2g of an oxide. Which of the following is the simplest formula of the oxide of potassium formed?

7 / 10

The empirical formula of a compound:

8 / 10

SO3

9 / 10

Calculate the number of moles of bromine molecules (Br2) in 4.00g of bromine

10 / 10

Neon (accurate relative atomic mass = 20.18) is made up of three isotopes: Ne-20, Ne-21 and Ne-22.

One of these makes up 90.92% of the element. Which one?

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