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: The bitter-tasting compound quinine is a component of tonic water and is used as a protection…

A:

Q: A 6.7283 g sample of a hydrate of MgSO4 was heated to drive off all of the water of hydration. The…

A: The first step is to calculate the mass of water that was lost when the hydrate was heated. This can…

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 33.733.7 g of oxygen. Calculate the mass of the…

A: The molar mass of oxygen is 15.999 g/mol, so 33.7337g of oxygen converts to 2.10 moles of oxygen.…

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…

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Q: Calculate (a) the number of atoms in 1.05 × 10−6 mole of helium and (b) the number of moles of…

A: a.

Q: The mass of 5.20 moles of glucose, C6H12O6 is   1.56 × 10‑21 g   31.2 g…

A: Given, Moles of glucose (C6H12O6) = 5.20 mol Mass of glucose (C6H12O6) = ? Note; Molar mass of…

Q: cetic acid (HC2H3O2HC2H3O2) is the active ingredient in vinegar. Calculate the mass percent…

A:

Q: the number of molecules of niacin

A: The given mass and molar mass of niacin is 16 mg and 123.11 g/mol. The number of moles of niacin =…

Q: An ice freezer behind a restaurant has a freon leak, releasing 43.31 g of C2H2F3Cl into the air…

A:

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

A:

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: What mass of carbon dioxide. CO2. contains the same number of molecules as 3.00 g of…

A:

Q: Vitamin A has the molecular formula C20H300. How many carbon atoms are in 6.02 x 1023 molecules vit…

A: As molecular formula of vitamin A is C20H30O . Thus in one vitamin A molecule  has 20 carbon atoms .…

Q: Vitamin C has the formula C6H8O6. Calculate the number of vitamin C molecules present in a 0.250-g…

A: Number of moles is given by the ratio of mass of the substance to that of the molecular mass. 1 mole…

Q: MgSO, zH2O, is heated to 250 °C, all the water of hydration is lost. OH Heatinga MgSO, remains. How…

A:

Q: A lawn fertilizer is rated as 7.55% nitrogen, meaning 7.55 g of N in 100 g of fertilizer. The…

A: Given, A lawn fertilizer is rated as 7.55% nitrogen, meaning 7.55 g of N in 100 g of fertilizer. The…

Q: What chemical property of potassium chlorate did you use to design a procedure to determine the…

A: Interpretation-  Tell that chemical property of potassium chlorate which we use to design a…

Q: How many molecules of ethanol (C2H5OH) (the alcohol in alcoholic beverages) are present in 145 mL of…

A: In order to calculate number of molecules of ethanol, first we have to calculate the number of moles…

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 33.733.7 g of oxygen. Calculate the mass of the…

A: Given, mass of oxygen = 33.7 g Now, one mole of C2HF3O2 contains two moles of oxygen.

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: 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: Aspartame (molecular formula C14H18N2O5) is a sugar substitute in soft drinks. Under certain…

A: Molecular formula: It is the formula that represents the number of every atom present in the given…

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: An organic compound has the empirical formula C2H4NO. If its molar mass is 116.1 g/mol, what is the…

A: Given data, Empirical formula = C2H4NO The molar mass = 116.1 g/mol The molecular formula of the…

Q: Consider a 134.5 g sample of the compound manganese(IV) perchlorate. Using the formula Mn(ClO₄)₄ (MM…

A: Weight of sample = 134.5 gm  Molar mass of MN(ClO4)4 = 452.74 g/mole

Q: Chlorophyll molecules are responsible for the green pigmentation of plants. Differing chemically…

A: Solution - According to the question - Given - Mass of 5 oxygen = 16 * 5 = 80 Mass of chlorophyll X…

Q: A hydrate of nickel (II) sulfate has the following formula: NiSO4·X H2O. The water in a 0.250 g…

A: Given: Mass of the sample = 0.250 g Standard data: The molar mass of NiSO4 = 154.75 g/mol The…

Q: When 7.003 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 20.50 grams…

A: The empirical formula of a molecule is represented by the atomic symbol of the constituting elements…

Q: A patient is having an allergic reaction and takes a 25.0 mg tablet of the over‑the‑counter…

A: Given that, a patient has an allergic reaction and takes a 25.0 mg tablet of an antihistamine…

Q: Arrange the following in order of increasing mass: 1.06 mol SF4; 117 g CH4; 8.7 × 1023 molecules of…

A: The following compounds in order of increasing mass have to be arranged

Q: Formaldehyde has the formula CH2O. How many molecules are there in 0.55 g of formaldehyde?

A: The molecular formula of Formaldehyde is CH2O Hence molar mass of CH2O = Atomic mass of C X 1 +…

Q: A lawn fertilizer is rated as 5.90% nitrogen, meaning 5.90 g of N in 100 g of fertilizer. The…

A: The answer is as follows.

Q: This is the chemical formula for methyl acetate: (CH3), CO₂. Calculate the mass percent of carbon in…

A:

Q: Calculate the mass (in kilograms) of chlorine in 25 kg of chlorofluorocarbon (CFC). CF3Cl

A: The given data contains, chlorine = 25 kg.

Q: Part C In the gaseous state, chlorine exists as a diatomic molecule Cl2 (Molar mass = 70.9 g/mol).…

A: Here we have to determine the moles of Cl2 present in 150 g of Cl2 and the mass of 2.90×10^22…