PLSS HELP ASAP!!

what is the similarities between gold and magnesium and lithium

Explain what happens at the saturation point when adding salt to water at room temperature.

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.

Complete each row of the table below by filling in the missing prefix or missing exponent.