Question

the density of an object is 2.8g/cm3. Express it in kg/m3

Answer 1

n = 2.8 (g÷1000g)(cm÷100cm)^3
n = 2.8*10^-3*10^-6
n= 2.8*10^-9

2.8*10^-9 is your answer

Answer 2

solution:

Here,

1 gm= 1/1000kg

so, 2.8gm= 2.8*1000= 0.0028 kg

Now, 1 cm= 1/ 100 m

so, 1cm*1cm*1cm= 1/100*1/100*1/100= 1/1000000 m^3

so, 2.8g/cm^3 = 0.0028/1/1000000

= 2800 kg/m^3

___________
#Amrit