1.What is the composition, in weight percent, of an alloy that consists of 5 at% Cu and 95 at% Pt? 2. Calculate the composition, in weight percent, of an alloy that contains 105 kg of iron, 0.2 kg of...

1.What is the composition, in weight percent, of an alloy that consists of 5 at% Cu and 95 at% Pt? 2. Calculate the composition, in weight percent, of an alloy that contains 105 kg of iron, 0.2 kg of carbon, and 1.0 kg of chromium. 3. What is the composition, in atom percent, of an alloy that contains 33 g of copper and 47 g of zinc? 4 What is the composition, in atom percent, of an alloy that contains 44.5 lb m of silver, 83.7 lb m of gold, and 5.3 lb m of Cu?