How many oxygen molecules will be needed to combust two molecules of hexane resulting in twelve molecules of carbon dioxide and fourteen molecules of
water ?

19

Explanation:

2C6H14 + 19O2 —> 12CO2 + 14H2O

answer: a tank of height h is filled with water and sits on the ground. water squirts from a hole at a height y above the ground and has a range r. for two y values, 0 and h, r is zero. determine the value of y for which the range will be a maximum.

explanation:

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary