One of the first mixtures of metals called amalgam used by densities for tooth fillings consisted of 26 g of silver, 10.8 g of tin, 2.4 g of copper, and .8 g of zinc, how much silver is in a 26 g sample of amalgam?

The answer to your question is : 16.9 g of Ag

Explanation:

Data

26 g Ag

10.8 g of Sn

2.4g Cu

0.8 Zn

Ag = ? in 26 g of sample

Total mass in the amalgam = 26 + 10.8 + 2.4 + 0,8 = 40 g

Rule of three

                              40 g of sample   26 g of silver

                               26 g of sample   x

                           x = (26 x 26) / 40

                          x = 16.9 g of Silver