5. A compound containing sulfur, nitrogen, and hydrogen has a composition of 86.6% sulfur, 12.6% nitrogen, and 0.91% hydrogen by mass. A solution prepared by dissolving 3.130 g of this compound in 25.00 g of bromoform, CHBr3, produces a solution that freezes at –0.31°C. What is the molecular formula of the compound? (Kf for bromoform is 14.4°C/m, and pure bromoform has a freezing point of 7.8°C.)

Consider the following multistep reaction: a b→ab(slow) a ab→a2b(fast)−−−−−−−−−−−−−−−−− 2a b→a2b(overall) based on this mechanism, determine the rate law for the overall reaction. express your answer in standard masteringchemistry format. for example, if the rate law is k[a]3[b]2 type k*[a]^3*[b]^2

Explain in detail of the four major scientific developments that spurred the formulation of the plate tectonics theory

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)]