If an athlete weighs 141 lb and has 15.0% body fat by weight, how many pounds of fat does the athlete's body contain?

Read the given expression. x = number of protons − number of core electrons which of the following explains the identity of x and its trends across a period? x is the effective nuclear charge, and it remains constant across a period. x is the screening constant, and it remains constant across a period. x is the effective nuclear charge, and it increases across a period. x is the screening constant, and it increases across a period.

What type of reaction is zn + cucl2 → cu + zncl2?

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5