Fluoride ion is poisonous in relatively low amounts: 0.2 g of f− per 70 kg of body weight can cause death. nevertheless, in order to prevent tooth decay, f− ions are added to drinking water at a concentration of 1 mg of f− ion per l of water.

how many liters of fluoridated drinking water would a 70−kg person have to consume in one day to reach this toxic level?
answer in scientific notation

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.

How many molecules are in 6.0 moles of methane

A1.5l container holds p.50 grams of an unknown gas at a pressure of 0.44 atm and a temperature of 50.c what is the molar mass of the unknown gas