Order the following elements from smallest ionic radius to largest. Place the element with the smallest ionic radius at the top, closest to this question. 1.As^ -3 (Arsenic)

2.Se^ -2 (Selenium)

3.Ga^ +3 (Gallium)

4.Ca^ +2 (Calcium)

5.Br^ -1 (Bromine)

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

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)]

Which statement best describes the he properties of iconic compounds ?