What is the conjugate acid of HSO4- in the reaction below? H2 SO4 (aq) + H2 O(l) rightleftharpoons H3 O+(aq) + HSO 4 -(aq) A. SO 4 ^ 2-
B. H 2 O
C. H 3 O^ +
D. H 2 SO 4

Neils bohr believed that electrons orbited the nucleus in different energy levels, based on strong support from

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)]

While in europe, if you drive 125 km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car’s gas mileage is 32.0 mi/gal? assume that 1 euro=1.26 dollars