Quantitative Analytics

Question 1

What meant by relative atomic mass?

Answer 1

Average mass of atom of an element relative to atomic mass unit

Question 2

Relative molecular mass=>___ compound
Relative formula mass=>_____compound

Answer 2

Covalent
Ionic

Question 3

What is formula of percentage of a part??

Answer 3

Part/total×100

Question 4

What is meant by mole?

Answer 4

Chemical expression express amount of substance

Question 5

What is meant by molar mass?

Answer 5

Substance its relative atomic mass measure in gram if its a compound

Question 6

How to get mole ??

Answer 6

Mass/ar or mass(g)/mr
Or
V(dm3)/24

Question 7

How to change mole/dm4 to g/dm3

Answer 7

Multiply mr

Question 8

What’s meant by limited reagent?

Answer 8

Reagent which used up first during chemical reaction and limit amount of products that can be formed.

Question 9

What’s meant by excess reagent?

Answer 9

Reagent which remain when chemical reaction stops

Question 10

How to change tonne to kg

Answer 10

×1000

Question 11

How to change kg to g

Answer 11

×1000

Question 12

Formula of yield?

Answer 12

Actual yeild/theoretical yeild ×100

Question 13

Formula of percentage of puritu

Answer 13

Mass of pure soluble/Mass of impute substance ×100

Question 14

What is meant by concentration of solution?

Answer 14

Amount of solute dissolved in certain volume of solvent