Asilver-copper alloy had a mass of 0.1264g. when the alloy was dissolved in nitric acid and the silver precipitated as silver chloride, the precipitate had a mass of 0.1375g. calculate the percent of silver in the alloy. for full credit, make sure you show your calculations.

The percent of silver in the alloy is 81.87%.

Explanation:

Mass of the alloy = 0.1264 g

Mass of silver chloride precipitate = 0.1375 g

Moles of silver chloride precipitate =

In 1 mole of silver chloride there are 1 mole of silver, then in 0.0009582 moles of silver chloride will ahve:

of silver

Mass of 0.0009582 moles of silver = 0.0009582 × 108 g/mol=0.1035 g

The percent of silver in the alloy:

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.