PLEAS HELPPP MASS. the amount of in an object. Mass is measured in the unit
Example: Car= (high or low) mass Paperclip= (high or low) mass
VOLUME: the amount of something takes up. Volume is measured in the unit .
Example: School=(high or low)volume
Paperclip=(high or low)volume

MASS: The amount of matter in an object. Mass is measured in the unit kg (kilograms). Example: Car = High mass. Paperclip = low mass.

VOLUME: The amount of space something takes up. Volume is measured in the unit m^3 (cubic meters). Examples: School = high volume. Paperclip = Low volume.

Hope this helped!

Explanation:

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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