Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm chlorine or 1 g of chlorine per million g of water. Calculate the volume of a chlorine solution (in milliliters) a homeowner should add to her swimming pool to achieve 1.00 ppm chlorine if the solution contains 6.00 perce chlorine by mass and there are 6.63 ×104 gallons of water in the pool. (1 gallon = 3.79 L; density of liquids = 1.00 g/mL.)

Q: A chemistry student weighs out 0.0345 g of chloroacetic acid (HCH,CICO,) into a 250. mL volumetric…

A: Molarity is defined as total number of solute present in 1000 ml of solution .   For neutralisation…

Q: A chemist prepares a solution of copper(II) fluoride (CuF,) by measuring out 0.022 g of copper(II)…

A:

Q: A chemist prepares a solution of copper(II) sulfate (CuSO4) by measuring out 12. g of copper(II)…

A:

Q: A chemist must prepare  550.mL  of  60.0mM aqueous potassium dichromate  K2Cr2O7 working…

A: Dilution is the process of decreasing the concentration of a solute by mixing more solvent. Dilution…

Q: The distance between the centers of two oxygen atoms in an oxygen molecule is 1.21 x 10 cm . What is…

A:

Q: A chemistry student weighs out 0.120 g of lactic acid (HCH,O,) into a 250. mL volumetric flask and…

A:

Q: A student needs to determine density of a liquid. The student determines mass of an empty flask to…

A:

Q: A student performs an experiment to determine the density of a sugar solution. She obtains the…

A: A data is said to be precise if experimental values are close to each other.  A data is said to be…

Q: A student is given the following question: "What is the mass of a gold bar that is 7.379 x 1o 4m3 in…

A:

Q: mol aqueous L A chemist must prepare 875. mL of 10.0 mM aqueous calcium sulfate (CaS0,) working…

A: On dilution, the concentration of solution decreases but the number of moles remain constant. Write…

Q: TUMS is a popular remedy for acid indigestion. A typical TUMS tablet contains calcium carbonate plus…

A: TUMS is an antiacid used to treat heart burn, upset stomach or indigestion by lowering the amount of…

Q: A pharmacy technician is asked to dispense 250ml of solution which contains 0.05g/5ml of drug. How…

A: Mass can be measured in different units such as grams (g), kilogram (kg), milligrams (mg)  Some…

Q: Nurses are often required to calculate dosages. That is, they must check the order that a doctor has…

A: Answer is given below

Q: A swimming pool has average dimensions of 40 feet by 20 feet by 6.0 feet. Given the density of water…

A: The formula of density is given as follows: Rearranging the terms,it becomes

Q: A certain person had a brain that weighed 1.45 kg and contained 1.45 x 1010 cells. Assuming that…

A: The length of one side of the cell can be calculated from the volume of one cell.

Q: 1. Perform the following calculations and give the answer rounded to the correct number of…

A:

Q: The population density of worms in a particular field is 33 worms per cubic meter of soil. How many…

A: Given dimensions of field = 1 km × 1.5 km density of worms = 33 worm per cubic meter of soil

Q: A chemistry student weighs out 0.179 g of chloroacetic acid (HCH,CiCo,) into a 250. mL volumetric…

A: The molar mass of chloroacetic acid is 94.5 g/mol. The number of moles of chloroacetic acid is…

Q: A chemist must prepare 375. mL of 890. µM aqueous copper(II) fluoride (CuF,) working solution. He'll…

A:

Q: A student dissolved 230.8 grams of cesium chloride in 100.0 grams of 90 °C water.  The student then…

A: 43.8 g of substance has separated out as solid. The mass of cesium chloride present in dissolved…

Q: Potassium cyanide is a toxic substance, and the median lethal dose depends on the mass of the person…

A: Solution :       The molarity of the solution is defined as the number of moles of solute dissolved…

Q: A chemist prepares a solution of iron(II) bromide (FeBr,) by measuring out 2.3 x 10 umol of iron(II)…

A: Change micro mol to mili mol the volume in L. then divide it.

Q: A chemist prepares a solution of potassium iodide (KI) by weighing out 37.1 g of potassium iodide…

A: Given: Mass of potassium iodide (KI) = 37.1 g volume of solution = 100 mL The concentration of…

Q: A chemist must prepare 750. mL of 240. mM aqueous sodium carbonate (Na₂CO3) working solution. He'll…

A:

Q: A stack of paper has a volume of 187 cube inches Now all the sheets are laid out on the floor,…

A: Given: Volume of a stack of paper = 187 cubic inches Area covered by paper       = 46,750 square…

Q: A 75 g sample of sodium chloride (table salt) is to be produced by evaporating to dryness a quantity…

A: NaCl = 3.5 % by mass % by mass = Mass ofsolutemass of sea water solution×1003.5 % = M1 g×100M =…

Q: TUMS is a popular remedy for acid indigestion. A typical TUMS tablet contains calcium carbonate plus…

A: TUMS is an antacid medicine which is taken during acid indidestion.when it reacts with gastric…

Q: For a pharmacist dispensing pills or capsules, it is often easier to weigh the medication to be…

A: Given:A single antibiotic capsule weighs 0.50 g and a pharmacist weighs out 12.5 g of capsules for…

Q: If you dissolve 24.4 g of NaCl in 251 g of water and generate a solution that has a density of 1.10…

A: Molarity of a solution is given by,

Q: 5) A student correctly determines that 17.1 grams of sucrose are needed to make 50 ml of a 1M…

A: ANSWER 5 .  We know that the concentration term i.e.,  Molarity (M) =  Moles of solute / Volume of…

Q: A chemist must dilute  49.9mL  of  973.mM  aqueous aluminum sulfate  Al2SO43  solution until the…

A:

Q: I think I did a calculation wrong but I am having trouble understanding significant figures. In…

A: Significant figures: These are the digits of a number that are useful in terms of accuracy and…

Q: to make a tablet of aspirin, it requires 249 mg of salicylic acid. if the chemist purchased 9.0 x…

A: mass  of salicylic acid purchased by chemist = 9.0 x 10-3 OZ  Mass of salicylic acid required to…

Q: 7) Tums is a popular remedy for acid indigestion. A typical Tums tablet contains calcium carbonate…

A:

Q: To identify a metal, an experimenter placed, 4850cg sample in a graduated cylinder. He then poured…

A:

Q: A chemistry student weighs out 0.0775 g of phosphoric acid (H₂PO4), a triprotic acid, into a 250. mL…

A: Given -> Weight of H3PO4 = 0.0775 gm Volume of H3PO4= 250 ml = 0.250 L (1L = 1000ml) Molarity of…

Q: Calculate the volume in mL of the sodium nitrate stock solution that the chemist should pour out

A:

Q: . Suppose you measure the weight of a metal to be 160.5 g and then you place it in a graduated…

A: Mass of metal = 160.5g  Volume of solid metal and liquid = 248.2ml Volume of (metal + water) =…

Q: The solubility of potassium chromate is 65.7 g per 100 g of water. In an experiment , a student had…

A: Given solubility of potassium chromate is 65.7 g per 100 g of water. Given volume of water is 762…

Q: A sample of tap water contains 1.95 x 103 ppm CaCO3(aq). Assuming the density of tap water is…

A:

Q: Azelastine hydrochloride is an antihistamine nasal spray. A standard-size container holds one fluid…

A:

Q: the unit of land measure in the english system is the acre, while that in the metric system is the…

A: We have to calculate the area in hectares.

Q: What mass (in kg) of saltwater would fill an olympic-size swimming pool that is 50.0 meters length,…

A:

Q: Suppose you are trying to find the volume of a box based on the given measurements for the length,…

A: Length of the box,l  = 2.20 in Width of the box, b= 3.91 in Height of the box , h = 10.4 in + 1 in…

Q: In normal whole blood there are about 5.4 x 10^9 red cells per milliliter. The volume of a red cell…

A: Given:- In normal whole blood there are about 5.4 x 10^9 red cells per milliliter. The volume of a…

Q: You have a patient who weighs 95 pounds. The dosage of a drug is 1.5 mg drug per kg of body mass.…

A: First we need to understand which unit convention are used in the question and which we want to use…

Q: If your piper uses 89 drops of stearic acid/hexane solution to add 1.28 mL to a graduated cylinder…

A:

Q: A chemist prepares a solution of iron(III) bromide (FeBr, by weighing out 45.48 g of iron(III)…

A: In this question, we will calculate the Concentration of this given Compound in g/dL unit and final…

Q: A student is asked to make up a 16% sodium chloride solution. She makes the solution by weighing an…

A: Given :  Weight of empty beaker = 98.5 gm  Weight of the beaker and sodium chloride = 114.71 g…

Q: To aid in the prevention of tooth decay, it is recommended that drinking water contain 0.900 ppm…

A: Formula used  ppm = (Mass of solute/mass of solution) 106 ppm = parts per million  density of water…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.