4 NH3 + 5 O2 - 4 NO + 6 H20 Given 20 moles of O2 and 14 moles of NH3, which would act as the limiting reactant?

Asample of aluminum foil contains 8.60 × 1023 atoms. what is the mass of the foil?

Agas can holds 2.0 gal of gasoline. what is this quantity in cubic centimeters?

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.