Top answers

Chemistry
GCSE

How do you make calcium hydroxide (Ca(OH)2) from Calcium carbonate (CaCO3) and what are the equations.

Thermally decompose the calcium carbonate:CaCO-> CaO + CO2Now mix the CaO with water:CaO + H2O -> Ca(OH)2

Answered by Nathan L. Chemistry tutor
19587 Views

Name the type of reaction that takes place when calcium carbonate is heated strongly?

This is called thermal decomposition. CaCOdecomposes into calcium oxide (CaO) and Carbon Dioxide (CO2).

Answered by Thomas G. Chemistry tutor
23162 Views

Describe a single covalent bond in terms of the electron distribution of the atoms involved.

Atoms involved in a covalent bond will share ​a pair of electrons in order to acheive a full outer shell in both atoms. Each atom will donate a single electron to the ...

Answered by Thomas M. Chemistry tutor
2932 Views

The element sulfer is a common componant of coal. When the coal is burned, what pollutant will the sulfer form? How will this new compound impact the environment?

Sulfer, when burned in the presence of oxygen, will form sulfer dioxide (SO2​). This can then dissolve in rain water, forming sulfuric acid. This will then fall to the ground as acid rain wh...

Answered by Thomas M. Chemistry tutor
2998 Views

If 20 kg of calcium carbonate was reacted with excess sodium chloride in the following reaction (2NaCl+CaCo3-->Na2Co3+CaCl2) what is the maximum mass of sodium carbonate that could be made?

1)Always write out the reaction first;

2NaCl+CaCo3-->Na2Co3+CaCl2  

2)Now underneath calculate the Relative Formula Mass using a periodic table for each of the compounds....

Answered by Andrew R. Chemistry tutor
11114 Views

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