If a 20 K gold ring has a mass of 5.2 g, then how much gold does it have?

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

Is of of 3- ? a. 1--3- b. 1--2- c. 1--3- d. of

In in , is to a 28.4-g (1-oz)−23.0 °c to −1.0 °c?