if a given water sample contains 10 parts per million phosphate, how many grams of phosphate...
A 150.0 g sample of ocean water contains 3.5 mg of mercury. How many parts per million of mercury are in the sample? Multiple Choice 15 ppm 23 ppm 24*102 ppm 2.3 * 104 ppm 43 ppm
c. How many phosphate ions are in a sample of hydroxyapatite that contains 5.50x10-3 grams of oxygen?
A 200.0g sample of rainwater contains 4.8 mg of sulfuric acid. how many parts per million of sulfuric acid are in the sample?
A chemical analysis of a water sample indicates that the water contains 6.50 times 10^-4 grams of Mercury metal per 2.00 liters of water. Convert the measurement to parts per million(ppm).Type in your answer without units.
How many grams of nitrogen monoxide must be weighed out to get a sample of nitrogen monoxide that contains 18.4 g of oxygen? g nitrogen monoxide An experiment requires that enough CH1206 be used to yield 17.8 g of oxygen. How much C H1206 must be weighed out? g If a sample of dinitrogen tetrafluoride contains 11.6 g of fluorine, how many grams of nitrogen does it contain? g nitrogen How many grams of nitrogen monoxide must be weighed out...
(1 point) A tank initially contains 25 liters of salt water solution with 10 grams of salt dissolved in it. Salt water containing one gram of salt per liter pours in at the rate of one liter per minute and the well-stired mixture drains out at the rate of 2 liters per minute. How many grams of salt will be in the tank after one minute? Answer: grams of salt.
Parts per million (ppm) strengths 31 If drinking water contains 0.7 ppm of fluoride, how much fluoride (in milligrams) would be present in 1 litre of water?
A bin of 50 parts contains 5 that are defective. A sample of 10 parts is selected at random, without replacement. (a) How many different samples of size 10 are there that contain at least three defective parts? (b) How many ways to obtain a sample of 10 parts from the bin of 50? (c) What is the probability of obtaining at least three defectives in a sample of 10 parts?
-2t A tank initially contains 10 liters of water and 5 grams of salt. Salt water containing 3+ e grams of salt per liter is pumped into the tank at a rate of 2 liters per minute. The solution of salt water is instantaneously, perfectly mixed and then pumped out at a rate of 2 liters per minute. Determine when, to three decimal places, the concentration of the salt leaving the tank is within 0.01 grams/liter of the salt entering...
1. How many grams of O are there in a sample of O that contains the same number of moles as a 55.4 gram sample of Kr? 2. How many MOLECULES of nitrogen dioxide are present in 3.28 grams of this compound 3. . How many GRAMS of nitrogen dioxide are present in 7.63×1022 molecules of this compound