The men\'s world record for swimming 1500.0 m in a long course pool (as of 2007) is 14 min 34.56 s. at this rate, how many seconds would it take to swim 0.750 miles? (1 mi = 1609 m.)

hloride, what is the mass of calcium in

explanation:

you gotta add the following molecules so we can give u an answer

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