In the following reaction, 2A1 + 6HCl → 2AlCl3 + 3H2 , the oxidation state for aluminum goes from...
A) 0 → +1
B) 0 → +3
C) +3 → +3
D) +3 → -3
E) 0 → -3

You have 125g of a certain seasoning and are told that it contains 76.0 g of salt what is the percentage of salt by mass in this seasoning

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.