Find the answer using dimentional analysis. a child requires a 5 ml dose of medicine each day. how many days would a gallon of this medicine last?

Conversion factor, 1 gallon = 4546.09 ml

Volume of stock solution = 1 gallon or 4546.09 ml

Dose required by the child = 5 ml/day

The number of days a gallon of this medicine last,

4546.09 ml x 1  day/ 5 ml = 909.218 days

Therefore, 1 gallon would last 909 days.

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