What is the molar mass of zinc sulfite heptahydrate, ZnSO3 7H2O? Select one: O a. 468...
6. a. What is the percent by mass of water in iron(II) sulfate heptahydrate, FeSO4•7H2O (or what percent of the molar mass of FeSO4•7H2O is due to the waters of crystallization)? b. What mass due to waters of crystallization is present in a 3.38-g sample of FeSO4•7H2O?
What is the percent by mass of water in iron (II) sulfate heptahydrate, FeSO4*7H2O (or what percent of the molar mass of FeSO4*7H2O is due to the waters of crystallization? Please include work so I can understand thanks.
The active ingredient in a zinc nutritional supplement is ZnSO4 .7H2O (molar mass 287.58 g/mol). Ten zinc tablets containing a mix of the active ingredient and an inactive filler were ground and mixed together thoroughly. The total mass of these 10 tablets was 10.600 g. A 1.980 g sample of the finely ground tablets was dissolved in an acidic solution. The solution tion of (NH4)PO to the s the precipitation of ZnNH,PO4. The precipitate was filtered and dried, then ignited...
What is the molar mass of copper (II) sulfate, CuSO4? Select one: O A. 63.55.9 OB. 159.629 O C. 111.55 g D. 319.17 g O E. 16.00 9 An unknown compound is composed of the elements Nitrogen and Oxygen. The compound is analyzed and determined to be 30.45% and 69.55% 0. The molecular mass of the compound is found to be 02.01 g/mol. Determine the compound's molecuar formula and provide your answer below as Nxoy where x and y are...
One molecule of a compound weighs 2.14e–22 g. Its molar mass is: Select one: a. 121 g / mol b. 129 g / mol c. 2.81 g / mol d. none of these e. 7.76e–3 g / mol
What is the percent composition of 1 molar mass of NaBr? Select one: O a. 30.27% Sodium and 69.73% Bromine b. 22.34% Sodium and 77.66% Bromine C. 14.11% Sodium and 85.89% Bromine O d. 23.42% Sodium and 76.58% Bromine
28 > The active ingredient in a zinc nutritional supplement is ZnSO, 7H, (molar mass=287.58 g/mol). Ten zinc tablets containing a mix of the active ingredient and an inactive filler were ground and mixed together thoroughly. The total mass of these 10 tablets was 11.285 g. A 2.056 g sample of the finely ground tablets was dissolved in an acidic solution. The solution was neutralized with ammonia and subsequently warmed in a water bath. Addition of (NH), PO, to the...
What is the molar mass of an ideal gas if a 0.72 g sample of this gas occupies a volume of 475./. mat 50.0°C and 720. mm Hg? Flag question Select one: O a. 42.40 g/mol O b. 16.98 g/mol c. 660.69 g/mol O d. 1.51 g/mol Oe. 20.17 g/mol son 8 Consider the following reaction: 2Al(s) + 3Cl2(g) - 2AlCl3(s), AH = -1391 kJHow many moles of Al are required to releasee 714.3 kJ of energy (assume 100% yield)...
1. Which name–formula pair is incorrect? A.magnesium sulfate heptahydrate, MgSO4·7H2O B.dinitrogen tetroxide, N2O4 C.strontium nitride, Sr3N2 D.hypochlorous acid, HClO2 E.titanium(IV) carbide, TiC 2. The complete combustion of phenylhydrazine, C6H5NHNH2, with the oxidizer dinitrogen tetraoxide is shown in the following equation: __ C6H5NHNH2 + __ N2O4 → __ CO2 + __ H2O + __ N2 When this equation is balanced, the sum of all the coefficients (using smallest whole numbers) is: A.25 B.20 C.10 D.15 E.30 3. Sorbose, C6H12O6, is used...
Decreasing levels of cause the endometrium to be sloughed off during menstruation. Select one: O a. progesterone o b. estrogen O C. LH O d. FSH Clear my choice Which hormone is responsible for ovulation of a mature egg in a female? Select one O a testosterone + b LH O c. FSH O d. estrogen Clear my choice