Research suggests that a daily dose of 85 mg aspirin (molar mass = 180.17 g), may reduce a person's risk of heart disease. How many moles of aspirin is that? 1 g = 1,000 mg A. • 0.0047 mol B. 0.00470 mol C. 4.72 x 10-4 mol O D. 4.7 x 104 mol E. 4.70 x 103 mol

Q: 16. How many grams of water (18.02 g/mol) would contain 5.64 x 1024 hydrogen atoms? c. 84.4 g d.…

A: Given, Number of H atoms = 5.64*1024 atoms

Q: NorQuest Library MyQuest MyMail The atomic molar mass of some elements, Atomic molar mass of some…

A: Molar mass of calcium nitrate is 164.10 g per mole

Q: A Sample of pure Calcium fiuoride With a mass of 15.0g Contains 1.709 of calcium. How much calcium…

A: This question can be solved using proportion method as:

Q: Butanedione, a component of butter and body odor, has a cheesy smell. Elemental analysis of…

A: The given data contains, Carbon = 55.80% Hydrogen = 7.03% Oxygen = 37.17%

Q: A 3.000 g sample of a gaseous compound was found to contain 2.560 g of carbon and  0.440 g of…

A: To answer this first of all we have to convert grams into moles and we have to determine the simple…

Q: Q8 -Boric acid, H3BO3, is a mild antiseptic and is often used as an eyewash. A sample contains…

A:

Q: 1) What is the molar mass of Ca(NO3)2? A) 70.0 g/mol B) 134 g/mol C) 148 g/mol D) 164 g/mol E) None…

A: The molar mass of Ca(NO3)2 is to be determined.

Q: Researchers obtained the following data from experiments to find the molecular formula of…

A: In order to find the formula of benzocaine we first write down the given data: Mass of the sample=…

Q: What amount, in moles, does this mass represent?

A: Number of moles = mass/molar mass  Molar mass of methanol is 32.04 g/mol

Q: How many grams of NBR3 can be made from 2.22 x 10-2 moles of Br, ? N2 + 3 Br2 2 NB13 + 44.0 kJ The…

A:

Q: Morphine (molar mass = 285.37 g/mol) is a narcotic %3D painkiller. How many moles of morphine are…

A: We know that : moles = weight of substance/molecular weight of substance  Or, moles (n) = weight…

Q: How many atoms are in a 1.8 mol sample of Magnesium (Mg)?      1.5 x10241.5 x1024 atoms Mg   2.99 x…

A: Given : Moles of Mg = 1.8 mol.

Q: Caffeine, a stimulant found in coffee and soda, has the mass percent composition: C, 49.48%; H,…

A: GIVEN: The mass % of carbon= 49.48% The mass % of hydrogen=5.19% The mass % of nitrogen=28.85% The…

Q: Zinc Oxide decomposes into zinc and oxygen. If 52.1 g of zinc oxide decomposes to form 41.8 g of…

A: Given,52.1 g of zinc oxide, 41.8 g of zinc.The balanced chemical reaction of decomposition of zinc…

Q: The molecule TFM is used as a lampricide to control the sea lamprey population in the Great Lakes.…

A:

Q: 7. Complete the following table. Mass Number of Number of Molecules or Number of Atoms Substance (g)…

A: As you not specified so I am giving answer of first 3 questions  Use there formula to get the…

Q: Citric acid, C HO,, is found in many fruits How many H atoms are contained in 0.1g of citric acid…

A: Given data contains, Mass of citric acid is 0.1 g. Molar mass of citric acid is 192.124 g/mol. The…

Q: Coal is a leading source of energy for the world. While coal is primarily composed of carbon and…

A: Given:S(s)+O2(g)→SO2(g)

Q: What is the mass of magnesium (24.305 g/mol) present in 0.3621 g Mg3N2 (100.949 g/mol)? 0.1744 g…

A: Given that:  Mass of Mg3N2 = 0.3621g  Molar mass of Mg3N2 = 100.949 g/mol Moles of Mg3N2 = given…

Q: A 15-g sample of lithium is reacted with 15 g of fluorine to form lithium fluoride: 2Li + F2 →…

A: First convert mass into mole by diving molar mass respectively Then Calculate limiting reagent by…

Q: How many grams of NaF are needed to form 485 g SF4? 3 SCI2 (1) + 4 NaF (s) → SF4 (g) + S2C12 (I) + 4…

A: Given that -  Balanced Chemical equation is -  3 SCl2 (l) + 4 NaF (s) ---> SF4 ( g) + S2Cl2 (l) +…

Q: A compound of hydrogen and carbon is 92.3% carbon, If 40 g of hydrogen is reacted with 135 g of…

A: Molecular mass is the sum of the masses of all the atoms in a given molecule. Percentage composition…

Q: A sample of iodine solid has a mass of 32.9 grams. How many I2 molecules are there in the sample?…

A: A mole is defined as one-gram formula or molecular weight of the compound. A mole is also defined as…

Q: 9. Using the following reaction 2NaBr +CaF, →2NAF+ CaBr2 If 6 moles of CaF2 were added, what mass of…

A: Given  moles of CaF2 = 6 moles Molar mass of  CaBr2 = 199.9 gm/mole Mass of CaBr2= ?

Q: A 21.8 g sample of water contains how many water molecules? O 8.23 x 1023 molecules O 7.29 x 1023…

A: Here we have to calculate number of molecules of 21.8 gram of water sample-

Q: EF and MF

A:

Q: The waters of the oceans contain many elements in trace amounts. Rubidium, for example, is present…

A: Note :  Since you have posted multiple questions, we are entitled to answer the first only. Please…

Q: The density of the 99.8 ml solution is 1,093 g/ml and it contains 12% KI by mass. This solution is…

A:

Q: The carat is the unit of mass used by jewelers, and it is exactly 200 mg. How many carbon atoms are…

A: In international system of unit, there are seven basic units. Out of those seven unit Mole is one of…

Q: In chemistry, what is meant by the term “mole?” What is the importance of the mole concept

A: Mole is a unit to  express the mass, Number and volume of a Substance in Chemistry.  It is a bigger…

Q: carbon-hydrogen-nitrogen compound when burned completely, a 0.312 g sample yields 0.458 g CO2 and…

A:

Q: 1. A 15.67 g sample of a hydrate of magnesium carbonate, MgCOs, was heated, without decomposing the…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: A student, Ken, is given a mixture containing two sulfate compounds. The  mixture includes K2SO4 and…

A: Given mixture is K2SO4 and BaSO4. The mixture is 52.12 % SO4 by mass. Molar mass of…

Q: What amount of CuSO4•5H,O, in moles, does this mass represent? mass = 1.787 g %3D X mol resubmit…

A: Given : Mass of CuSO4.5H2O = 1.787 g And molar mass of CuSO4.5H2O = 249.69 g/mol.

Q: The iodide ion is a dietary mineral essential to good nutrition. In countries where potassium iodide…

A: 100 mg of Potassium iodide contain = 76.45 mg. of iodine Daily recommendation = 150 mg.

Q: How many hydrogen atoms are in 1.0 G sample of acetic acid, CH3COOH? The molar mass of acetic acid…

A: Mass= 1gm Molar mass=60g/mol

Q: How many grams of nitrogen are present in a 0.10-g sample of caffeine, the stimulant in coffee and…

A:

Q: A 10.5 g sample of lithium is reacted with 18.5 g of fluorine to form lithium fluoride: Li + F2 →…

A: Given, A 10.5 g sample of lithium is reacted with 18.5 g of fluorine to form lithium fluoride:Li +…

Q: them from smallest to largest by mass. 0.75 mol H20(liq) 7.0 g N2(g) 0.55 mol Ar(g) 0.45 mol N2(g)

A: Mole of a substance or a mole of a particles is defined as exactly 6×10^23 particles which may be…

Q: (C12H,Cl402, molar mass 322.0 g/mol), is a potent poison. The average lethal dose in humans is…

A:

Q: 7,8, and 9

A: According to bartleby rules i am supossed to ans one question. The ans for the 7th question is given…

Q: A chemist decomposes samples of several compounds; the masses of their constituent elements are…

A: Empirical formula is the simplest ratio of the elements present in the given molecular formula.…

Q: Phosphoric acid is a colorless, syrupy liquid used in detergents, fertilizers and carbonated…

A: Phosphoric acid symbol is H3PO4

Q: A sample of terbium contains 3.01×1025 atoms. What is the total mass of this sample?The molar mass…

A: It is required to calculate the mass of 3.01 x 1025 atoms of terbium and the molar mass is 158.9…

Q: A 3.000 g sample of a gaseous compound was found to contain 2.560 g of carbon and 0.440 g of…

A: To solve thia problem first we have to calculate the number mole of C and H in the given sample.  By…

Q: 3. Elements B and N form a binary compound BNy When 12 grams of this compound was made from its…

A: Mass of compound = 12 g  Mass of nitrogen = 7 g  We need to determine formula of compound.

Q: Penicillin N is an antibacterial agent that contains 8.92% sulfur by mass. Which value could be the…

A: Given data:

Q: What is the molar mass of the rocket propellant, CIF3? Remember to round your answer to the tenths…

A: To find the molar mass of compound , we have to take sum of all the masses of different elements…

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".