In the lab, chemist analyzed a sample of methanol and found that it was made of 6.20 g of carbon, 4.10 g of hydrogen, and 15.90 g of oxygen. What is the percent composition of each element? Round each answer to the tenths place.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al oxidizing agent = reducing agent =

Adilute aqueous potassium nitrate solution is

For the reaction shown, calculate how many moles of no2 form when each of the following completely reacts. 2n2o5(g)→4no2(g)+o2(g) part a 1.0 mol n2o5 express your answer using two significant figures. nothing mol m o l request answer part b 5.4 mol n2o5 express your answer using two significant figures.