What is the difference between a control group and an experimental group in a lab experiment?​

How many atoms are there in 5.70 mol of mg

Connect the whole numbers on the periodic table to indicate what they represent?

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.