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

The reaction between heated magnesium and steam can be represented by the equation:

Mg + H2O => MgO + H2

What volume (measured under standard conditions) of hydrogen will be formed by the reaction of 0.200 mole of magnesium with an excess of steam?

 

2 / 10

How many moles of molecules are present in 300cm3 of chlorine? (all volumes measured at r.t.p.)

3 / 10

How many moles of molecules are present in 0.120 dm3 of oxygen? (all volumes measured at r.t.p.)

4 / 10

What is the volume (in dm3) occupied at room temperature and pressure (r.t.p:298K and 100KPa) of 1.00 mole of oxygen molecules?

5 / 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?

6 / 10

ZnCl2

7 / 10

phosphorus (III) chloride

8 / 10

Calculate the number of moles of chlorine atoms in 142g of chlorine

9 / 10

Calculate the relative atomic mass (to one decimal place) of element, C if element C is a mixture of two isotopes, 85C and 87C, with the abundances 72.15% and 27.85% respectively.

10 / 10

How many carbon-12 atoms would have the same mass as 3 Si atoms? Enter a whole number.

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