Q7 You have a stock solution that contains 78 mM calcium carbonate. You need to make 98 mL of a solution that contains 10 mM calcium carbonate. How many mL of the stock solution do you need to use? Answer to 2 decimal places Read about significant figures and rounding in the Helpful Resources page! Do not include units when reporting your answer Use standard notation as accepted by Canvas e.g. 0.01

Q: A pycnometer (Figure 1) is a special flask often used for measuring the densities of substances.…

A: The volume of a given liquid is defined as the amount of the space occupied by the liquid that fully…

Q: A chemistry student weighs out 0.261 g of citric acid (H,C,H,O,), a triprotic acid, into a 250. mL…

A: Given-> Weight of citric acid = 0.261 gm Volume of citric acid = 250 ml  Molarity of NaOH =…

Q: A pediatric patient needs to receive heparin following surgery. The physician's orders 28 heparin…

A: Given, requirement of heparin = 28 heparin units kg × hr            concentration of heparin…

Q: The adult dosage of diphenhydramine, an antihistamine, is 50.0 mg. A 21 Ib child should only receive…

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Q: mol stock solution of zinc nitrate in L A chemist makes 580. mL of zinc nitrate (Zn(NO,).) working…

A: The method through which the specified stock solution's strength gets lowered is termed as…

Q: Trying to figure out how to convert nanograms to milligrams. There was an example given to me but I…

A: we know,     1 nanogram=1×10-9gram     that  means  10-9g present  in 1 ng     we have  to  convert…

Q: A marine biologist measures the volume of a seawater sample. The volume is  1858mL. What is the…

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Q: chemist prepares a solution of sodium carbonate (Na, CO, by weighing out 62.1 g of sodium carbonate…

A: We have given that Mass of Na2CO3 = 62.1 grams Volume of volumetric flask = 300mL  i.e.…

Q: A chemist adds 975.0 mL of a 0.425 g/L calcium sulfate (CaSO.) solution to a flask. Calculate the…

A: We will use strength of solution given to find mass of calcium sulfate.

Q: n chemistry student weighs out 0.0308 g of acrylic acid (HCH,CHCO,) into a 250. ml, volumetric flask…

A: Given-> Weight of acrylic acid = 0.0308 gm Volume of acrylic acid solution = 250 ml molarity of…

Q: He will do this in three steps: • Fill a 750.0 mL volumetric flask about halfway with distilled…

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Q: What is the volume of an object of mass 20.00 g and density 2.0 g/mL? 1._______ / 2._______ =…

A: Given the mass of the object, m = 20.00 g  density of the object, d = 2.0 g/mL

Q: A liquid solvent is added to a flask containing an insoluble solid. The total volume of the solid…

A: Given Total volume of the solid and liquid together is 95.0 mL The liquid solvent has a mass of 27.9…

Q: Osmium has a density of 22.6g/mL. What volume would be occupied by a 13.7g sample of osmium? Report…

A: Given that:  density, d = 22.6 g/ml Mass = 13.7 g V =?

Q: mol stock solution of A chemist makes 0.670 L of mercury(1) chloride (Hg, Cl,) working solution by…

A: FOR DILUTION M1V1= M2V2 M1 = Initial molarity of solution, V1 = Initial volume of solution, M2=…

Q: (a) How many picometers are there in 1 m? (b) Express6.0 * 103 m using a prefix to replace the power…

A: (a) The conversion of 1m into centimeters (cm) is done as,

Q: Pomegranate Juice Orange Juice White Grape Juice copyright 2010 www.aciencebob.com Which Juice is…

A: Since you have posted multiple questions, we are entitled to answer the first only. The pic given…

Q: Gather all of your pennies dated before 1982. Then follow the steps to complete the table. Include…

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Q: 1) Convert 73.5 F to Celsius. Report your answer with the correct number of significant figures.…

A: 1) Given : Temperature in oF = 73.5 oF

Q: A new temperature scale has been invented called the °GS. If the temperature is -105 °C, calculate…

A: Formula for calculation: C = 3.1/(16.8 - GS) Given that: Temperature in degrees C = -105

Q: You have a 15.0 M stock solution of Superstressin (something that little nervous dogs are known to…

A: By using dilution principle we can easily calculate  given problem. In dilution process no. of moles…

Q: How many mL are in 3.0 tsp? 1tsp=4.93mL. Answer with the appropriate number of significant figures.

A: The volume of 3.0 tsp is calculated as shown below. The volume of 3.0 tsp is 14.79 mL.

Q: A student dissolves 12.4g of ammonium nitrate (NH4NO3) in 200.g of water in a well-insulated open…

A: Given, Mass of Ammonium nitrate = 12.4 g Mass of water = 200.0 g Temperature of water falls from 21◦…

Q: A chemist makes 380. mL of calcium sulfate (CaSo working solution by adding distilled water to 240.…

A: The process of dilution is defined as the process in which a solution with a lower concentration is…

Q: A pharmacists measures out three amount of 200 mL and two amount of 150 mL from a stock bottle of 2…

A: Given : Total volume of stock solution = 2 L.                          Total mass of a drug = 5…

Q: A blood concentration of 0.065M ethyl alcohol (EtOH) is sufficient to induce a coma. At this…

A: Since concentration = moles of solute / volume of solution in L Solute here is ethanol And volume of…

Q: How many mL of 0.556 molar magnesium chloride must a scientist pour into a beaker to have 17.6 g of…

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Q: M OSTATES OF MATTER Calculating mass concentration A chemist prepares a solution of sodium chloride…

A: Given, mass of NaCl = 49.66 g Note: 100 mL = 1 dL Volume of the volumetric flask = Volume of the…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: we need to convert from ml to dl  i.e. millilitre to decilitre

Q: If 15 drop ethanol from a medicine dropper weigh 0.60g how many drops does it from a dropper to…

A: Given data contains, Mass of 15 drop of ethanol is 0.60 g. Density of ethanol is 0.80 g/mL.

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

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Q: An aqueous sodium nitrate (NANO3) solution must be created for an experiment. If 50.00 mL of a 0.150…

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Q: If a container of liquid contains 40 oz of solution, what is the number of ounces pure acid if the…

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Q: 4. In Figure 4 below, a graph shows the relationship between mass and volume for two substances, A…

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Q: NDC 63323-359-03 305903 KANAMYCIN INJECTION, USP *1 g/3 mL (333 mg/mL) For IM or IV Use 3 mL Vial Rx…

A: Given: Mass of Kanamycin required               = 285 mg Concentration of Kanamycin injection = 333…

Q: A marine biologist measures the volume of a seawater sample. The volume is 1211 mL. What is the…

A: We know, 1 Liter(L) = 1000 milliliters(mL)

Q: -1 A certain liquid X has a normal freezing point of -9.00 °C and a freezing point depression…

A: Freezing point of a liquid is defined as the temperature at which it gets converted to solid.…

Q: ow many gigagrams are there in 5.66×108 milligrams? Your answer should not be in scientific…

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Q: Convert 3.5x10-7 mg/mL to micro-grams/dL

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Q: Water hardness is expressed as parts per million calcium carbonate. If there are 850 ppm of calcium…

A: 1 ppm = 1 mg/mL ; ( 1mg of solute is present in 1 mL of solution) If water is the solvent then: 1…

Q: Which of the following is a best practice in weighing solid samples? A Place chemicals directly on…

A: For the majority of everyday objects, a balance is used to determine an object's mass. The balance…

Q: A solution containing an unknown chemical has a density of 5.71 kg/L, what is the mass (in pounds)…

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Q: A student sets up the following equation to convert a measurement.(The ?stands for a number the…

A: We know that  1KJ=1000J 1mol=1000mmol now we have to convert the given measurement, 0.010 Jmmol·C∘

Q: The solubility of benzoic acid is 1.81 g per 100 mL of hot water. A student adds 1.81 g of benzoic…

A: Given : Mass of benzoic acid added in 100 mL water = 1.81 g  Solubility of benzoic acid at lower…

Q: A chemist makes 930. mL of barium chloride (BaCl,) working solution by adding distilled water to…

A: A chemist makes 930. mL of barium chloride BaCl2 working solution by adding distilled water to 200.…

Q: mol A chemist must prepare 475. mL of 1.00 M aqueous aluminum chloride (AICI,) working solution.…

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Q: from 0.8778 g/mL, please calculate the mass (in ug) of 71.38 nL of liquid 1.

A: The mass present per unit volume is defined as density. The density of liquid 1 = 0.8778 g/mL The…

Q: Density: A barge company wants to float supplies down the Kansas River. To make the most money, they…

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Q: Part A Wine is 13% alcohol by volume. How many milliliters of alcohol are in a 0.700-L bottle of…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: Assuming that the solution in the pipette has a density of 0.993 g/mLg/mL , calculate the mass of…

A: Volume of the solution can be determined by taking the difference between upper and lower meniscus.…

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.