A 55-kg woman has 7.5x10^-3 mol of hemoglobin (molar mass = 64,456 g/mol) in her blood. How many hemoglobin molecules is this? What is the quantity of hemoglobin molecules in grams?

Q: In the US, alcohol proof is equal to twice the percent of alcohol (ethanol) by volume, so for…

A: Percentage volume by volume: is one of the ways to express concentration of solution. Formula is:…

Q: Vinegar is sold as a standardized solution of 5.00% by mass acetic acid in water. Assuming the…

A: Given that vinegar is  5.00%  by mass acetic acid in water. i.e. 5 g of acetic acid (CH3COOH) is…

Q: A chemist performs a gravimetric analysis. The chemist combines 1.00L of 2.00MAgNO3(aq) with 1.00L…

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Q: What volume of 0.204 M NaOH, in milliliters, contains 35.0 g of NaOH? Volume = mL

A: NaOH has a molar mass of 39.997 g/mol. This means that one mole of NaOH has a mass of 39.997 g.…

Q: A 55-kg woman has 483.42 grams of hemoglobin (molar mass = 64,456 g/mol) in her blood. How many…

A: Number of moles of a substance is equal to the mass of substance divided by its molar mass. Write…

Q: 1) What mass of NaOH (in grams) do you need to make 250.0 mL of a 1.50 M NaOH

A: The molarity of the solution is given by the equation, molarity=moles of solutevolume of solutionL…

Q: he Law of Conservation states that matter cannot be created nor destroyed during a reaction. How…

A: Hi, the first question is incomplete as the experiment is not given. Hence we are solving the second…

Q: Calculate the mass of precipitate (in g) produced when 75 mL of 6.00 mol/L sodium hydroxide solution…

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Q: What is the molarity of a solution that contains 140 grams of calcium chloride (CaCl2) dissolved in…

A: Given, mass of calcium chloride (CaCl2) = 140 g Note: Assuming no change in the volume  Volume of…

Q: What volume of 0.135 M NaOH, in milliliters, contains 31.0 g of NaOH?

A:

Q: If 0.276 grams of acetic acid (MM = 60.05 g/mol) are present in your 2.00 mL sample of vinegar, what…

A:

Q: Aspirin (C9H8O4) is synthesized by reacting salicylic acid (C7H6O3) with acetic anhydride (C4H6O3).…

A: Given: Mass of salicylic acid = 1.00 x 102g= 100g To find: The mass of acetic anhydride Maximum mass…

Q: 1.A solution of zinc nitrate is added to a solution of magnesium sulfate. 2.You make 1.000 LL of an…

A:

Q: A stock solution of hydrochloric acid is prepared by dissolving 15.7 g hydrochloric acid in enough…

A: Given  mass of HCl = 15.7 gram  Volume of solution = 749 mL  1000 mL  = 1 Liter  749 mL    =…

Q: What volume of 0.220 M NaOH, in milliliters, contains 45.0 g of NaOH? Volume mL %3D

A:

Q: You have 150.0 mL of a 0.821 M solution of Ce(NO3)² What mass (in grams) of Ce(NO₂), would be…

A: Mass of Ce(NO3)4 can be calculated by knowing the concentration and volume of solution.

Q: An analytical chemist weighs out 0.123 g of an unknown monoprotic acid into a 250 mL volumetric…

A:

Q: In the laboratory you dissolve 22.9g of magnesium iodidein a volumetric flask and add water to a…

A: Since the molar mass of magnesium iodide i.e MgI2  = Atomic mass of Mg + 2 X Atomic mass of I  Hence…

Q: A 4.23 g4.23 g sample of a laboratory solution contains 1.96 g1.96 g of acid. What is the…

A: Mass percent = (mass of acid/ total mass) ×100% Mass percent is defined as the ratio of mass of…

Q: What is the molarity of a solution made by mixing 2.77 g of potassium hydroxide with enough water to…

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Q: An analytical chemist weighs out 0.461 g of an unknown triprotic acid into a 250 mL volumetric flask…

A: The molar mass of an unknown acid is to be calculated from the given data. Given: Mass of unknown…

Q: how many mL of 0.874 molar magnesium chloride must a scientist pour into a beaker to have 30.4 g of…

A: Molarity (M) :-  The number of moles of solute present in dissolved state in one litre of solution…

Q: In the laboratory, you dissolve 19.9 g of cobalt(II) chloride in a volumetric flask and add water to…

A: Given, amount of cobalt(II) chloride w = 19.9 g volume of solution V = 125 mL = 0.125 L we are asked…

Q: You have 150.0 mL of a 0.507 M solution of Ce(NO3),4. What mass (in grams) of Ce(NO3), would be…

A: The given data contains, Volume of Ce(NO3)4=150 ml.Molarity=0.507 M.

Q: A chemist prepares a solution of magnesium chloride (MgCI,) by measuring out 25.5 mg of MgCl, into a…

A: Given:: mass of MgCl2 = 25.5 mg = 0.0255 g molar mass of MgCl2 =95.211 g mol-1 volume = 50 ml =…

Q: . An aqueous solution of sodium carbonate, Na2CO3, is titrated with strong acid to a point at which…

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Q: What is the molarity of toluene in a solution that is prepared by adding 59.3 g of toluene (CH)…

A: Since we know that  Molarity = number of mole of solute /volume of solution in L  First we calculate…

Q: 4. The density of 20.0% NaOH (by weight) is 1.22 g/mL. What is the molarity of 20% NaOH?

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Q: Enter your answer in the provided box. How many grams of solute are needed to make 870 mL of 6.46 x…

A: Given data: Volume = 870 mL Concentration of potassium sulfate = 6.46×10-2 M

Q: In many communities, water is fluoridated to prevent tooth decay. In the United States, for example,…

A: moles = mass/ molecular mass or atomic mass since atomic mass of F = 19 gm /mol dividing by 1000 to…

Q: Do parts per million denote a concentration that is a mole ratio? Does the concentration of a…

A: ppm(parts per million) is mg/L.

Q: In the laboratory you dissolve 16.6 g of magnesium chloride in a volumetric flask and add water to a…

A:

Q: How many grams of solute are present in 565 mL of 0.670 M KBr? mass of solute:

A:

Q: Calculate the molarity of a solution prepared by dissolving 12.50 grams of NaNO3 in 250. mL of…

A: Molarity is defined as the moles of solute present in one liter of solution.

Q: An analytical chemist weighs out 0.050 g of an unknown triprotic acid into a 250 mL volumetric flask…

A: In an acid-base neutralization reaction, normality will be compared as the base is monobasic and the…

Q: What is the molarity of a solution of NaOH if you dissolved 30.0 g into 500. mL of water?

A:

Q: In an experiment, a solution is prepared by dissolving 55.0 g NaOH in water until the final volume…

A: Given mass of NaOH = 55 g Volume of solution = 300 ml = 300 × 10-3 L

Q: A 9.33 % solution of sulfuric acid has a density of 1.07 g/mL.  What is the molarity (M) of this…

A: Given: The density of 9.33 % solution of sulfuric acid is 1.07 g/mL The mass percent is 9.33%

Q: A soft drink contains 39 g of sugar in 303 g of H2O. Part A What is the concentration of sugar in…

A: We have given that Mass of sugar = 39 g Mass of water = 303 g

Q: You are given solutions of HCl and NaOH and must determine their concentrations. You use 30.0 mL of…

A: The given problem can be solved by the following steps: 1. Calculation of molarity of NaOH from the…

Q: the molarity of Cl- if a solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The…

A: The molarity of a solution is given by following formula,M=mass of solutemolar mass of…

Q: In the lab, a student makes a solution of NaOH by dissolving 49.0 grams of solid in 195 mL of water.…

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Q: One of the ionic compounds in sports drinks is potassium dihydrogen phosphate (KH2PO4). The label on…

A: The question is based on the concept of solutions.   molarity is a method of expressing…

Q: A 55-kg woman has 0.0085 mol of hemoglobin (molar mass = 64,456 g/mol) in her blood.…

A: The moles of hemoglobin present in the blood of 55-kg is 0.0085. We know that the moles of…

Q: The average concentration of dissolved gold in earth's oceans is  5.8 x 10^−9 g/L. of ocean…

A: 6380 μgram of gold are in 1.1x103 m3  of ocean water

Q: The mass of solute per 100 mL of solution is abbreviated as (m/v). Mass is not technically the same…

A: % (w/v) = (100 x Mass of solute in g)/Volume of solution in mL

Q: A person drinks 1.50 × 103 g of water, H2O, per day. How many moles is this?

A: Given,Mass of water = 1.50×103 gMolar mass of water is 18.015 g/mol

Q: The molar mass of ibuprofen is 206.3 g mol-1 and a standard tablet contains 0.2 g ibuprofen.  What…

A: Given that : The molar mass of ibuprofen = 206.3 g/mol The mass of ibuprofen in a tablet = 0.2 g

Q: If you take 51.9 grams of calcium chloride (CaCl2) and dissolve it in 185.2 mL of water, what is the…

A:

Q: One of the Ionic compounds in sports drinks is potassium di hydrogen phosphate. The label on one of…

A: 30mg of potassium in present in 240ml of the solution. The weight of potassium dihydrogen phosphate…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".