Check my answers ! 1.which of the following conditions increases the number of collisions between reactant molecules in a given volume? decreasing the temperature adding more reactant molecules (correct) making the particles clump together removing a catalyst 2.for this chemical reaction ch3br + oh- = ch3oh + br-, which of the following would indicate that the reaction occurred? increase in ch3br concentration over time or decrease (answer decrease) increase in oh concentration over time or decrease

Atrain travels 74 kilometers in 3 hours, and then 81 kilometers in 5 hours. what is its average speed?

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н,о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

Word equation for k(s)+h2o(l) yield koh(aq) + h2(g)