A chunk of solid calcium has a mass of 250g and when dropped into water it displaces the water in the graduated cylinder from 35mL to 196mL. What is the density of calcium?

The answer is

1.55 g/mL

Explanation:

The density of a substance can be found by using the formula

From the question

mass of calcium = 250 g

volume = final volume of water - initial volume of water

volume = 196 - 35 = 161 mL

It's density is

We have the final answer as

1.55 g/mL

Hope this helps you

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other

Firstly, the water in the dams hold gravitational potential energy as they are above ground level. the gravitational potential energy is then transferred to kinetic energy as it falls, spinning the turbinethe turbine then spins the generator, which is a large magnet surrounded by metal coils. by doing this, the generator generates electricity. in this action, the energy transfer taken place is kinetic to electric energy