How many moles of oxygen react with hydrogen to produce 22.8 mol of h2o? the balanced equation is as follows: 2h2 + o2 → 2h2o how many grams of co2 are produced if 35.48 mol of hcl are reacted according to this balanced chemical equation? caco3 + 2hcl → cacl2 + co2 + h2o

Layers of rock containing fossils, like the layers illustrated here, are most likely composed of rocks.

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

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.