Can you work this out for me and explain because I need help??

Give a real-world example of an energy transformation that uses two of the following forms of energy: chemical, mechanical, nuclear, gravitational, radiant, electrical, thermal (heat), and/or sound.

Which of the following are in a chemical family a. ca, sc, k b. cu, ag, au c. so, ge, sb

What is the final volume in milliliters when 0.641 l of a 34.0 % (m/v) solution is diluted to 23.5 % (m/v)?