How many moles of Ca(NO3)2 are there in 0.075 L of 0.25 M solution?

Use the drop-down menus to answer each question. which runner finished the 100 m race in the least amount of time? which runner stopped running for a few seconds during the race? at what distance did anastasia overtake chloe in the race?

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Which electron configuration represents the electrons in an atom of sodium in the ground state at stp