Mg(s) + 2hcl(aq) mgcl2(aq) + h2(g)

Please give me a real answer please!

What is the number of moles in 15.0 g ash3?

How have the greenhouse gasses increased from the year 2000 to 2018

Which of the following is a physical change? a.burning a piece of wood b.sawing a piece of wood in half c.rust forming on an iron fence d.a copper roof changing color from orange to green