14. measuring cylinder containing some water stands on a scale pan. A solid ball is lowered into the water. The water level rises from the 30cm mark to the 40cm' mark. The scale reading increases from 100g to 180. What is the density of the material of the ball?​

mass and volume are the answers you are looking for

k2s for potassium sulphide

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.