It is recommended that drinking water contain 1.6 ppm fluoride (f-) for prevention of tooth decay. consider a reservoir with a diameter of 4.50 x 102 m and a depth of 10.0 m. (the volume is ℎ, where r is the radius and h is the height.) how many grams of f- should be added to give 1.6 ppm? fluoride is provided by hydrogen hexafluorosilicate, h2sif6. how many grams of h2sif6 contain this much f-?

these are common warning signs of overtraining syndrome:

washed-out feeling, tired, drained, lack of energy

mild leg soreness, general aches, and pains

pain in muscles and joints

sudden drop in performance

insomnia

headaches

decreased immunity (increased number of colds, and sore throats)

decrease in training capacity/intensity

moodiness and irritability

depression

loss of enthusiasm for the sport

decreased appetite

increased incidence of injuries.

a compulsive need to exercise