The concentration of many toxic chemicals is measured in ppm (parts per million). One ppm means 1 gram of the chemical per million grams of substance. How many grams of lead are contained in 24.5 lb of blood (average for humans) if the Pb concentration is 0.62 ppm? Please use dimensional analysis to find your answer.

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. initial mass and yield sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

Which form of relativism states that people rely on their own standards of right and wrong when making a decision?