If a sample of water is being determined to contain 332 ppm of lead, how many g of lead does one gallon (1 gal = 3785 g of water) of this lead contaminated water contain? Round your answer to 4 decimal digits.
If a sample of water is being determined to contain 332 ppm of lead, how many...
QUESTION 5 If a sample of water is being determined to contain 447 ppm of lead, how many g of lead does one gallon (1 gal - 3785 g of water) of this lead contaminated water contain? Round your answer to 4 decimal digits.
Water in a jar contains 250. ppm lead. How many grams of lead will be taken by a person who drinks 200. mL of water from the jar? Assume density of water to be 1.00 g/mL.
How many milliequivalents of chloride ion are contained in a sample that is determined to contain 0.725 g of chloride ion?
Contaminated water: In a sample of 40water specimens taken from a construction site, contained detectable levels of lead. Part: 0 / 30 of 3 Parts CompletePart 1 of 3Your Answer is incorrect (a) Construct a 99% confidence interval for the proportion of water specimens that contain detectable levels of lead. Round the answers to at least three decimal places.A 99%confidence interval for the proportion of water specimens that contain detectable levels of lead is.
Contaminated water: In a sample of 43 water specimens taken from a construction site, 23 contained detectable levels of lead Part 1 of 3 (a) Construct a 99% confidence interval for the proportion of water specimens that contain detectable levels of lead. Round the answer to at least three decimal places. A 99% confidence interval for the proportion of water specimens that contain detectable levels of lead is 0.339 <p < 0.731 Part: 1/3 Part 2 of 3 (b) Construct...
Contaminated water: In a sample of 43 water specimens taken from a construction site, 23 contained detectable levels of lead. Part: 0/3 Part 1 of 3 (a) Construct a 99% confidence interval for the proportion of water specimens that contain detectable levels of lead. Round the answer to at least three decimal places. A 99% confidence interval for the proportion of water specimens that contain detectable levels of lead is }<p<.
The quantity of Cl in a water supply is determined by titrating the sample with Ag^+ Ag^+ (aq) + Cl- (aq) rightarrow AgCI (s) How many grams of Cl- are in a sample of the water if 20.2 mL of 0.1M Ag^+ is needed to react with all the chloride in the sample? If the sample has a mass of 10 g, what percent Cl- does it contain?
fluoridation accurate as a result of addition of NaFto water. Suppose the desired cocentratioco of F- is 0.3 ppm. Calculate how many milliligrams of NaF should be added per gallon of treated water if the water supply already has 0.01 ppm in F-? (1 gallon = 3.786L)
Lead is a toxic metal that affects the central nervous system. A Pb-contaminated water sample contains 0.0012 % Pb by mass. What volume of the water in milliliters contains 155 mg of Pb? (Assume that the density of the solution is 1.0 g/mL.) Express your answer using two significant figures.
How many strings of 10 decimal digits are there that contain the following combinations of numbers? Show your work. You may leave your answer in terms of an expression involving factorials/exponents. One 0, four 2’s, and five 8’s Exactly one 1, two 3’s, and one 7 (the other six digits can be anything