You need to prepare a stock solution at ph 7.00 with kh2po4 and na2hpo4 (pka =7.21). what would be the respective concentration of these substances if you wish to obtain the final phosphate concentration [hpo4 −2 ] + [h2po4 − ] = 0.3 m? b. what will be the ph of the solution after adding 0.18 l of 0.2 m naoh?

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

It would be true sodium reacts with water in a violent way 

Do you have any options?

Radioactive fallout is a result of the fission creation used to ignite the thermonuclear fusion reaction.