For an alloy that contains 33 g of copper and 47 g of zinc, calculate its composition in terms of weight percent and atom percent, respectively. Atomic weights of copper and zinc are ACu

Arock can be broken down into different kinds of substances by physical processes. no chemical reactions are needed to separate different parts of a rock into pure substances. this is because a rock is a(n)

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space

How many grams of magnesium metal will react completely with 8.3 liters of 5.5m hcl? show all work