How do you convert particles to moles, and mass to moles? 1) 77.56 g of CaCO3 to mole
2) 2.55 x 1024 molecules of KCl to grams
3) 0.0931 mol of BaCl2 to grams
4) 1.55 x 1022 molecules to moles
5) 0.664 moles of HF to molecules
6) 86 g of Fe(NO3)3 to formula units
7) 7.88 x 1023 molecules of CO2 to grams
8) 2.93 mol of MgF2 to grams
9) 7.56 g of MgCO3 to moles
10) 8.55 x 1021 molecules of NaCl to grams

indium, and thallium have three electrons i think

"hydrogen bonding is the attraction of h atoms in the water molecule (slight + charge) to o atoms in a neighboring water molecule (slight - charge); it is a weak interatomic force. but it is still strong enough to the water molecules "stick" together."

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >

i do not get it   at all