The average adult heart pumps about 84. mL/s of blood at 72 beats per minute. Suppose you need to calculate how long it would take the average heart to circulate 1200. mL of blood. Set the math up. But don't do any of it. Just leave your answer as a math expression. Also, be sure your answer includes all the correct unit symbols. time = 0 x10 μ

Q: It has been estimated that 8.0 × 104 tons of gold (Au)have been mined. Assume gold costs $1350 per…

A: Given that : Mass of gold = 8.0×104 tons Cost of gold = $1350 per troy ounce Worth of gold =? (1…

Q: How many bottles of wine are needed at a wedding if each person drinks 5 glasses of wine and 50…

A: Given that,  Number of people attended the wedding = 50 Each person drinks 5 glasses of wine  1…

Q: A chemist must dilute 78.3 mL of 9.91 mM aqueous calcium sulfate (CaSO4) solution until the…

A: For dilution, we can use the formula:Here, M1 = molarity of the original solutionV1 = volume of the…

Q: Convert 1.00m^2 to units of mm^2.  (Express answer in scientific notation.)

A:

Q: A student wanted to measure the density, in g/mL, of an unknown metal alloy. They had multiple sized…

A: To find the density of unknown metal, first draw the graph of mass Vs volume. Create a regression…

Q: In a laboratory, you determine that the density of a certain solid is 5.23 x 10 ° kg/mm. Convert…

A:

Q: A chemist prepares a solution of potassium permanganate (KMnO4) by measuring out 0.479 g of…

A:

Q: A chemist prepares a solution of sodium chloride (NaCl) by weighing out 2.346 g of sodium chloride…

A: Concentration (w/V) = wt of solute in gram /volume of solution in Litre (V ltr)

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: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: Given : Mass of water in swimming pool = 8.45 X 104 gallons  Mass percent of chlorine = 6.00 %  And…

Q: A chemist prepares a solution of iron(II) bromide (FeBr,) by measuring out 470. g of iron(II)…

A: Given: mass of FeBr2 = 470 g volume of flask, V=450 mL                             =0.450 L We know…

Q: A chemist must dilute 89.2 mL of 407. mM aqueous potassium dichromate (K₂Cr₂O₂) solution until the…

A: As we know,Moles the solute remains same on dilution but volume of the solution increases.Dilution…

Q: A chemist prepares a solution of sodium nitrate (NANO,) by weighing out 281.1 g of sodium nitrate…

A: Given data, Mass of NaNO3 = 281.1g Volume of solution = 450.0mL

Q: Your calculator gives you the number 1761.2868 as the volume (in cm^ 3) of a box 2.0 ft by 6.5 cm by…

A: When rounding off the result of a multiplication, the number of significant figures in the final…

Q: A chemist prepares a solution of sodium nitrate (NaNO3) by measuring out 0.18 μmol of sodium nitrate…

A:

Q: An instrument used to detect metals in drinking water can detect as  little as 1 μg of mercury in 1…

A: According to this question, Using formulas are  No.of atoms in V Ltrs of water = mass in V Ltrs…

Q: A chemist prepares a solution of mercury(I) chloride (Hg,Cl,) by measuring out 0.347 mg of…

A: Molarity is a concentration term for a solution. The molarity of a given solution is defined as the…

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: a small sheet of aluminum metal (?=2.70 g/cm3). The sheet had a mass of 1.3648 g, a length of 2.05…

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Q: A chemist must dilute 44.5 mL of 443. mM aqueous copper(II) sulfate (CuSO4) solution until the…

A:

Q: Digitalis, a drug used to control atrial fibrillation in patients is to be given as 20.0 mg/kg body…

A: Given: Body weight = 160.0 pound Dose for patient: 20.0 mg/kg body weight 2.205 pounds = 1.00 kg

Q: A bar of gold with a mass of 2060.5 g has the following dimensions: 7.30 cm by 3.25 cm by 4.50 cm.…

A: Density is calculated by using the formula : Density = Mass/Volume

Q: You are trying to determine the density of a piece of metal. You use a balance and find that the…

A:

Q: The weight of a rock is measured to be 0.072 lbs. After placing the rock in a graduated cylinder…

A: * Mass of a rock = 0.072 lbs ( lbs = 453.592 g ) = 32.65 g * Initial volume of graduated cylinder =…

Q: Multiply or divide the following measurements. Be sure each answer you enter contains the correct…

A: The answer to a multiplication or division is rounded off to the same number is significant figures…

Q: The mass of a uranium atom is 3.9526 × 10-22 grams. What is this value in nanograms? In your…

A: The mass of uranium atom = 3.9526×10–22 grams

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

A:

Q: A chemist must prepare 575.mL of 1.00M aqueous sodium carbonate Na2CO3  working solution. She'll do…

A: When a concentrated solution (stock solution) of concentration C1 and volume V1 is diluted by adding…

Q: A chemist prepares a solution of copper(II) fluoride (CuF₂) by weighing out 0.0307 mg of copper(II)…

A: Given: The mass of copper(II) fluoride taken is 0.0307 mg. Volume of water is 50.0 mL.

Q: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1 ppm…

A: The values are given as follows:

Q: A chemist prepares a solution of mercury(I) chloride (Hg₂Cl₂) by measuring out 0.53 mg of mercury(1)…

A: Mass of mercury chloride = 0.53 mg = 0.00053 g  (1 mg = 0.001 g ) Molar mass of mercury chloride =…

Q: A chemist measures the volume of a chemical solution. The volume is 0.0129 L. What is the volume in…

A: In this question, we will convert the given volume from liters to milliliters using the relation…

Q: Analysis of a sample showed that it contained 68.3% lead, 10.6% sulfur, and 21.1% oxygen. What is…

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Q: Calculate the volume of water (in mL) that must be added to 64.2 mL of a 5.92 mol/L NaClO3(aq)…

A:

Q: A chemist prepares a solution of nickel(II) chloride (NiC1₂) by measuring out 18. g of nickel(II)…

A: Given -> Weight of nickel(2)chloride= 18 gm  Volume of solution= 200 ml

Q: A chemist makes 0.440 L of mercury(I) chloride (Hg,Cl,) working solution by adding distilled water…

A: M1V1( Stock solution)= M2V2(working solution) Given: Volume of Stock solution, V1 = 0.0800 L…

Q: A chemist must dilute 22.0 mL of 45.9 µM aqueous magnesium fluoride (MgF₂) solution until the…

A:

Q: Calculate the volume in mL  of the potassium dichromate stock solution that the chemist should pour…

A:

Q: A chemist prepares a solution of copper(II) sulfate (CuSO4) by weighing out 9.472 g of copper(II)…

A: A question based on concentration terms that is to be accomplished.

Q: A chemistry student needs 90.0g of carbon tetrachloride for an experiment. The density of carbon…

A:

Q: A jet airplane reaches 682. km/h on a certain flight. How long does it take to cover 342. m? Set the…

A: Given Speed (v) = 682 km/h Distance to be travelled (D) = 342 m = 342 × 10-3 km  Time taken (t)t = D…

Q: Dilution A chemist makes 610. mL of copper(II) fluoride (CuF,) working solution by adding distilled…

A: Final volume= 610mL Initial volume= 270 mL Centration of copper (2)floride=0.00449M

Q: A chemist prepares a solution of nickel(II) chloride (NiCl₂) by measuring out 2.1 × 10² μmol of…

A: Concentration - It is the amount of solute present in per unit volume of solution  Concentration =…

Q: For example: 10.1 +93.4 = 103.5, because both 10.1 and 93.4 are precise to the tenths place. Solve…

A:

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.