In the real world, the pendulum in a clock eventually comes to a stop. Someone or something needs to supply energy for the clock to continue to work. Why do you think the pendulum cannot continue moving on its own forever? Where does its energy go?

Explanation:

real world, the pendulum in a clock eventually comes to a stop. Someone or something needs to supply energy for the clock to continue to work. Why do you think the pendulum cannot continue moving on its own forever? Where does its energy go?

answer: mercury

explanation:

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