Atomic Structure Analysis And Quantitative Chemistry

Question 0

What is the mass number of an atom?

Answer 0

Number of neutrons and protons in the atom?

Question 1

If the relative mass of a proton is one,what is the relative mass Of a neutron?

Answer 1

One

Question 2

What is the atomic number of an atom?

Answer 2

The number of protons it contains

Question 3

Isotopes of an element have:

Answer 3

The same number of protons

Question 4

Number of grams equals the Mr the substance is:

Answer 4

One mole

Question 5

If an isotope of sodium has 11 protons and 13 neutrons,the mass number is?

Answer 5

24

Question 6

If an atom had a mass number of 27 and an atomic number of 13 ,how many neutrons will it have?

Answer 6

27-13=14

Question 7

The atom that the masses of atoms is compared with is:

Answer 7

C12

Question 9

Artificial colours can be detected and identified using?

Answer 9

Paper chromatography

Question 10

What is the carrier in gas chromatography?

Answer 10

The gas itself

Question 11

What does a number of peaks on a gas chromatography show?

Answer 11

Number of compounds in the sample

Question 12

The time taken for the substance to travel through gas chromatography is called:

Answer 12

Retention time

Question 13

The mass spectrometer can show:

Answer 13

Relative molecular mass of the sample compound

Question 14

If 24g of A produces 15g of B,how much B is produced from 16g of A?

Answer 14

16÷24×15 = 10g

Question 15

The Ar of C is 12 and the Mr of CH4 is 16. What is the percentage by mass of C in CH4?

Answer 15

16÷12=75%

Question 19

If the Ar of C is 12 and the Ar of O is 16,what is the Mr of CO2?

Answer 19

12+16+16=40