Answer:
check explaination
Explanation:
Q. 4:
a) 7 ml
b) 9 ml
c) volume of rock = volume of column (with rock in it) - volume of column (without rock)
= 9-7
= 2 ml
d) density = mass ÷ volume
therefore, mass = volume × density
= 2 × 3 => 6 g
Q. 5:
1st has the highest density
this is because, density = mass ÷ volume
as volume is constant , density is directly proportional to mass
as image 1 has more number of molecules, it's mass will be maximum.
therefore, 1st image will have maximum density
