Which formulas and their respective names match? i) li3n lithium nitride ii) h2s hydrogen sulfite iii) so2 sulfur dioxide iv) alf3 aluminum trifluoride a. i and ii b. i and iii c. ii and iv d. i, ii, and iii?

What is the number of moles of chemical units represented by 9.03x10^24? and how do i show work? (dumb it down )

Sulfuric acid is a polyprotic acid. write balanced chemical equations for the sequence of reactions that sulfuric acid can undergo when it's dissolved in water.

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]