The above reaction scheme presents one possible synthesis of diphenhydramine. Work out the synthesis on a separate sheet of paper, and then draw the structure of compound a. Consider E/Z stereochemistry of alkenes. Do not show stereochemistry in other cases. Do not include lone pairs in your answer. They will not be considered in the grading. Draw organometallic compounds as covalent molecules. Do not draw organic or inorganic by-products.

what is the general relationship between a galaxy's distance from earth and its speed?

the answer is:

the farther away a galaxy is from us, the faster it is moving away from us.

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:

there are two significant figures.