1 cm? Cu 11
9 g Cu
9.5 x 1021 atoms Cu
= 1 g Cu
1 cm3 = 1 mL
1 kg
1000 g
IL
1000 cm3
9.5 x 1021
atomas
Cu
atomas
= 4.56 x 1024 goatoms
480 g *
A piece of copper has a mass of 480 g. How many atoms does the sample contain?
In the boxes above, enter the correct setup that would be used to solve this problem.

Astudent pours 10.0 g of salt into a container of water and observes the amount of time it takes for the salt to dissolve. she then repeats the process using the same amounts of salt and water but this time she slowly stirs the mixture while it is dissolving. the student performs the experiment one more time but this time she stirs the mixture rapidly. the dependent variable in this experiment is: time for salt to dissolve speed of stirring amount of water mass of salt