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Chemistry
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What is the relative formula mass of CaCO3?

The relative formula mass (RFM) is simply just a sum of the atomic masses that make up the compound in question.

Ca = 40

C = 12

O = 16

RFM of CaC...

JH
Answered by Joshua H. Chemistry tutor
69137 Views

24 g of Magnesium reacts with 16 g of Oxygen to produce 40 g of magnesium oxide. What mass of magnesium would you need to produce 10 g of magnesium oxide?

There are two ways to work this out, one is a lot simpler than the other, I will post the simpler method here.

The relative formula mass of magnesium oxide, MgO (40), is just a sum of the...

JH
Answered by Joshua H. Chemistry tutor
74453 Views

0.250 g of a hydrocarbon known to contain carbon, hydrogen and oxygen was subject to complete combustion and produced 0.3664 g of CO2 and 0.1500 g of H2O. What is the empirical formula of this hydrocarbon?

The first step here is to determine the mass of C in CO2 and the mass of H in H2O. This is done by dividing the relative atomic mass, Mr, by the relative molecular mass of the com...

JH
Answered by Joshua H. Chemistry tutor
13145 Views

1.5 g of hydrocarbon undergoes complete combustion to give 4.4 g of CO2 and 2.7 g of H2O. Given this data, what is the empirical formula of this hydrocarbon?

The first step here is to determine the mass of C in CO2 and the mass of H in H2O. This is done by dividing the atomic mass by the molecular mass and then multiplying by the mass ...

JH
Answered by Joshua H. Chemistry tutor
86660 Views

In reaction kinetics, what parameters affect the rate of the reaction?

The rate of a reaction is affected by the concentration of the reactants, the action of a catalyst and the temperature. If we change the concentration of the reactantants, the reaction rate is going to ch...

DK
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