Question

Solve this passage:- 1.)Mass of substance is amount of matter present in the while weight is the force exerted by granvity on an object. The mass of the substance is not constant whereas its weight may vary from one place to another due to change in gravity. The mass of a substance can be determined in the laboratory using on analytical balance. 1. )what is weight? 2. )How can we determined mass of a substance? 3.)The numberof significant figures in 0.0101? a) 3 b) 2 c) 4 d) 5 4.)which of the following orbitals does not exit? a) 6s b) 3p c) 2d d) 4f​

Answer 1

Answer:

3.  3

4.  2d

Explanation: hope this answers may help you