Identify the type of reaction:

Ca + Br2 → CaBr2

Sylvanite is a mineral that contains 28.0% gold by mass. how much sylvanite would you need to dig up to obtain 77.0 g of gold? explain how you got your answer and the steps you took. you

Using the periodic table, complete the table to describe each atom. type in your answers.a ? b? c? d? e? f?

What is the mass of 0.46 mol of mgcl2