What are some of the forms of energy you used today? How did you use them? Potential and Kinetic
(Heat or Thermal energy, Solar Energy, Chemical energy, electrical energy, mechanical energy)

Heat or Thermal energy, Solar Energy, Chemical energy, electrical energy, mechanical energy

Explanation:

Potential and Kinetic a great example for them would be a roller coaster where at the top is where you have all the most potential energy and when you are falling that is where you are increasing your kinetic energy.

Heat and Thermal energy are used to keep us warm like a A/C system has a heater that heats us up with Heat and Thermal energy.

Solar energy is energy we get from the sun. We get energy from solar panels, plants get their food from solar energy, and we get a good tan :).

Electrical energy is how I am typing this sentence right now. Internet and computer and chargers and etc.

Mechanical energy is how we work with machines and how things work like a toy car going down a ramp or a gear turning.

Explanation:

idk what the question is about

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o