Question

PLS ANSWER IT FAST OK​

Answer 1

Answer:

(1)8.4 g cm^-3 , (ii)8400 kg m^-3

Explanation:

density in g cm^-3

density = mass /volume

= 252/ 30 = 8.4 g cm^-3

(ii) density in km m^-3

= .252/.00003= 25200/3

= 8400 kg m^-3

[Note : 1cm^3 =1 × 1/100 × 1/100 × 1/100

= 0.000001 m^3

so 30 cm^3 = 30× 1/100 × 1/100 × 1/100

= 3/100000 = 0.00003 m^3 ]