The recommended daily allowance of the niacin (vitamin B3) is 16 mg per day for man. The molecular formula for niacin is C6H5NO2. Calculate the number of molecules of niacin in 16 mg.

Q: One of the Freons, CCI₂F2, is manufactured from carbon tetrachloride and hydrogen fluoride. The…

A: Given,when CCl4 reacts with HF to form CCl2F2 and HCl.mass of CCl2F2 = 117 kgmass of CCl4 = 183…

Q: 2. A compound has the following chemical formula; CuAl6(PO4)4(OH)8 4 H₂O. Calculate the mass…

A:

Q: When I calculate 9.89g of caffeine (C8H10N4O2) into number of atoms I divide the mass by atomic mass…

A: Your calculations are on the right track, but it's important to understand the concept of the mole…

Q: Lithium has two stable isotopes, 6Li and 7Li. If a sample is composed of 48.0% of the lighter…

A: Average mass of an element is defined as the atomic mass of the element calculated by multiplying…

Q: A patient is having an allergic reaction and takes a 50.0 mg tablet of the over‑the‑counter…

A: Given, Mass of diphenhydramine hydrochloride = 50.0mg. Moles of diphenhydramine hydrochloride can be…

Q: Acetaminophen, a common aspirin substitute,has the formula C 8 H 9 N O 2 . Determine the numberof…

A: Given  Molecular formula of acetaminophen = C8H9NO2  Molar mass of C8H9NO2 = (12 x 8 ) + ( 1 x 9 ) +…

Q: Calculate the mass in grams of 1.10 x 1024 molecules of Sulfane, H2S. g NA= 6.022 x 1023

A:

Q: An 8.00 gram sample of the hydrated salt, CoCl2 x XH2O was thermally decomposed into anhydrous…

A: Given: Mass of hydrated salt = 8.00 g. And the mass of anhydrous salt obtained = 4.370 g.

Q: plucheme & Calculate the Mass (in grams) of 6.97 x 1023 Compounds of (NH4)2S

A:

Q: Calculate the molar mass of Iron(III) chloride hexahydrate: FeCl3• 6H20. O 162.29 g/mol O 180.29…

A: Given  Molar mass of EDTA disodium salt dihydrate = 372.24 g/mole Molar Mass of FeCl3.6H2O Molar…

Q: What is the mass of 8.3 x 10^23 molecules of ibruprofen (C13H18O2 )?

A: Given data, Number of molecules of ibruprofen =8.3x1023 It is known that, one mole of a substance…

Q: Determine the mass percentage of carbon, C, hydrogen, H, and oxygen, O, in C8H₁6O₂. Refer to the…

A:

Q: A lawn fertilizer is rated as 4.57% nitrogen, meaning 4.57 g of N in 100 g of fertilizer. The…

A: We can solve the problem as below : 1 mole of Urea, (NH 2) 2 CO has = 2 moles of nitrogen. So, we…

Q: A drop of water, H2O, has a volume of approximately 0.050 mL. Assuming that the density of water is…

A: Given volume of 1 drop = 0.05 ml density of 1 drop = 1 g/ml number of drops = 3

Q: Determine the number of molecules of ethanol( C 2 H 5 OH) in 47.0 g.

A: In the International System of Units, the mole (symbol: mol) is the unit of measurement for the…

Q: natural product has the molecular formula C25H34O4. What is the mass of 3.31×108 molecules of this…

A: Molecular weight of the compound is  =(12×25)+(34×1)+(16×4) =398 g/mol Where Atomic mass of C ,H And…

Q: A patient is having an allergic reaction and takes a 25.025.0 mg tablet of the over‑the‑counter…

A:

Q: Calculate the mass of 8.4 x 1 0 24 molecules of carbon dioxide (dry ice) (Hint: first calculate the…

A:

Q: Convert 2,58 x 10 22 grams of X4Z2 into molecules/formula units of the same compound. (Assume that…

A: Answer :- Here I have explained the complete solution . Hope this will really help !!!!!!!!!!!!   So…

Q: If an air conditioning unit is charged with 4.9 x 1023 molecules of R-113 (C5Cl3F6), what mass of…

A: Given : Number of molecules of C5Cl3F6 = 4.9 X 1023

Q: Determine the number of atoms of O in 10.0 g of C₂H₄O₂.

A: Given that,mass of C2H4O2 = 10 gmolar mass of C2H4O2 = 60g/mol number of moles of C2H4O2 = 10 g / 60…

Q: Codeine, a narcotic drug used to treat cough, has an empirical formula of C18H21NO3. What is the…

A: Please find your solution below :

Q: Write the empirical formula corresponding to aspirin, C₉H₈O₄.

A: Empirical formula  Smallest whole number ratio that exists between a compound's constituent…

Q: A patient is having an allergic reaction and takes a 12.5mg tablet of the over‑the‑counter…

A: The mass of the tablet is = 12.5 mg = 12.5 x 10-3 g The molecular formula of diphenhydramine…

Q: The nerve agent Tabun (GA) has the formula C5H11N2O2P. It is one of the lethal chemical compounds…

A: Given information: Mass of tabun = 975 mg

Q: Convert 9.83 x 1022 grams of X4Z4 into molecules/formula units of the same compound. (Assume that…

A:

Q: How many Na+ ions are present in 3.91 g of Na2S?

A:

Q: 74. A throat lozenge contains 5.0 mg of menthol, which has the formula C10H20O. How many moles of…

A: Given : 74. 1. How many moles of menthol are in 5.0 mg of menthol? 2.What is the mass in grams of…

Q: The U.S. recommended daily allowance (RDA) of vitamin C, C6H8O6, is 60.00 mg. Calculate the number…

A: Molecular mass is the mass of a given molecule. It is measured in amu. Different molecules of the…

Q: A sample of trifluoroacetic acid

A: Atomic mass of C = 12 amu Atomic mass of H = 1 amu Atomic mass of F = 19 amu Atomic mass of O = 16…

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: Step - 1Formula for the compound = XBr3Means in 1 mol of compound 3 mol of Bromine are…

Q: What is the mass of 7.10 moles of magnesium chloride, MgCl2? Express your answer with the…

A: 1) The compound given is MgCl2 with moles = 7.10 mol Since molar mass of MgCl2 = Atomic mass of Mg +…

Q: Vitamin B12, cyanocobalamin, is essential for human nutrition. Its molecular formula is…

A: Cyanocobalamin is vitamin B12 with molar mass of 1355.38 g/mol

Q: Write the empirical formula for at least four ionic compounds that could be formed from the…

A: Write the empirical formula for at least four ionic compounds that could be formed from the…

Q: A major component of honey is fructose (C6H12O6) with a molar mass of 180.16 g/mol. A tablespoon…

A:

Q: Chromium(III) oxide can be made from the reaction of sodium dichromate and ammonium chloride. What…

A: Given, mass of  sodium dichromate (Na2Cr2O7) = 108.7 g mass of ammonium chloride (NH4Cl) = 61.6 g…

Q: A compound contains only carbon, hydrogen, and oxygen. Combustion of 10.68 mg of the compound yields…

A:

Q: A hydrate of copper(II) chloride has the following formula: CuCl2.xH2O. The water in a 3.41-g sample…

A: When the molecules exist with the bonding of the specific number of water molecules in their lattice…

Q: What is the mass of 5.34 x 10^23 molecules of sodium hydrogen carbonate. So far I have Na:22.99 +…

A: Given,the molecules of sodium hydrogen carbonate = 5.34 x 1023 molecules.Atomic mass of Na = 22.99…

Q: Rank the following compounds in order of increasing mass percentage of nitrogen: NO, NO₂, N₂O.

A: NO :Formula to find the % of N :% of N = (mass of N / molar mass of the compound ) X 100…

Q: Fiber optics, pigments, and the coloring of glass and ceramics are mainly made of Tellurium Dioxide…

A: First we have to count the total number of Te4+ and O2- ions present in the unit cell. Ionic radius…

Q: he mass percent o

A:

Q: A student is running an experiment in which 67.2 grams of CaSeO4 is needed, but the only jar of…

A: We are given a jar of calcium selenate dihydrate. The molecular formula of calcium selenate…