Question

Write the chemical formula for each of the following:
a. Calcium carbonate
b. Carbon dioxide
c. Iron(II) sulfate

Short answer

(a)Chemical formula is $CaC{O}_3$

(b)Chemical formula is $C{O}_2$

(c)Chemical formula is$FeS{O}_4$

Step-by-step solution

Part(a) Step1 : Given information

We have been given that,

Calcium carbonate

We need to find the chemical formula.

Part(a) Step2: Simplify.

Chemical formula for Calcium carbonate is $CaC{O}_3$.

• Reacts with water to form soluble calcium bicarbonate.
• Main application are in buildings materials, ceramic tiles, adhesives, etc.

Part(b) Step1 : Given information

We have been given that,

Carbon dioxide.

We need to find the chemical formula.

Part(b) Step2: Simplify 

Chemical formula for Carbon dioxide is $C{O}_2$.

• Covalent bonding.
• Planar molecule.
• Exist naturally in atmosphere.
• Contributor for global warming.

Part(c) Step1 : Given information

We have been given that,

Iron(II)Sulphate

We need to find the chemical formula

Part(c) Step2: Simplify 

Chemical formula for Iron(II)Sulphate is $FeS{O}_4$.

• It is type of weak acid.
• Appears as yellow-brown crystalline solid.
• This is commonly exist as heptahydrate.