[10-{(4/4-1)*4-7}+15]
please help me solve the problem.
Answers
Answer:
Tomato is a natural source of _____________ acid.
2) Brine is an aqueous solution of______________.
3) Lime water reacts with chlorine to give______________.
4) _____________ is the fixed number of water molecules chemically attached
to each formula unit of a salt in its crystalline form.
5) Use of mild base like ____________on the bee-stung area gives relief.
6) The compound which is obtained from baking soda and is used to remove
permanent hardness of water is ______________.
7) Soluble bases are called _____________.
8) Zinc reacts with sodium hydroxide_____________.
Answer these questions:
1) What happens when a solution of an acid is mixed with a solution of a base
in a test tube?
2) Write the chemical formula of hydrated copper sulphate and anhydrous
copper sulphate.
3) Why cake or bread becomes soft & spongy on adding baking powder? Write
chemical equation.
4) Write the balanced chemical equation of chlor-alkali process.
5) In the following list of acids, separate strong acids from weak acids.
Hydrochloric acid, citric acid, acetic acid, nitric acid, formic acid, sulphuric
acid.
6) A white coloured powder is used by doctors for supporting fractured bones.
a) Write chemical name and formula of the powder.
b) When this white powder is mixed with water a hard solid mass is obtained.
Write balanced chemical equation for the change
Step-by-step explanation:
Answer:
18 is the correct answer