If given 2.5 moles of C2H6O and 5.5 moles of oxygen (O2), how many moles of water can be produced? __ C2H6O + __ O2 → __ CO2 + __ H2O

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.

What is the independent variable in this investigation? mass volume sample number substance density

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.