A) Suppose you have a compound which has an empirical formula of C4H5N2O and molar massof 194 g/mol. What is the compounds molecular formula? A. C4H5N2O B. C8H10N4O2 C. C12H15N6O3 D. C6H7N4O3 E. C6H8N4O3   B) How many liters of 0.300 M aluminum (III) hydroxide do you need to titrate 0.300 L of a 0.300M diprotic acid to the equivalence point? A. 0.100 L B. 0.150 L C. 0.200 L D. 0.250 L E. 0.300 L   C) 413. The enthalpy of combustion of methane gas, CH4(g), is about -9.0*102kJ/mol. When methanegas reacts with O2(g), the products are carbon dioxide CO2(g) and water H2O(l). How much heatis released during the combustion of methane gas when 2.0 mols of O2(g) are consumed. Expressyour answer in kJ. A. 3.0*102kJ B. 6.0*102kJ C. 9.0*102kJ D. 12*102kJ E. 18*102kJ

Q: (MC) Identify the correct mathematical calculation to determine the number of moles in 9.85 grams of…

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Q: a. What mass is represented by 0.0146 mol of C3H7OH (2-propanol, rubbing alcohol)? Mass %3D b. What…

A: a). Given: The moles of C3H7OH = 0.0146 mol. The molar mass of C3H7OH = 60.09 g/mol.

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Q: Determine the number of molecules of Cr.O. that form when 1.34 x 10 gof oxygen completely reacts…

A: Given: Mass of Oxygen = 1.34 x 103 g Given Reaction is  To determine- Number of molecules of Cr2O3

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A: • The given chemical equation is,    H2C2O4 + KOH ---> K2C2O4 + 2H2O    • In order to balance…

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A: One mole of oxygen gas is equal to = O2 (two atoms of oxygen ) One oxygen atom = 16 g

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A: We are give the data in the table, We know that, PV=nRT n=PV/RT

Q: how many moles of NH4NO3 ARE THERE IN 24G OF NH4N03

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Q: express the moles in the next equation N2+ 3H2 -> 2NH3

A: Given reaction, N2+ 3H2 --> 2NH3

Q: a formula unit of

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A: Calculation of empirical formula.

Q: FIOW TTa ly How many grams of aluminum oxide (Al, O) are equal to 6.32 x 1023 formula units?

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Q: 27. A compound is 75.7% arsenic and 24.3% oxygen by mass. empirical formula? 75.7 What is the

A: Given, mass of arsenic(As) = 75.7 % = 75.7 g mass of oxygen(O) = 24.3 % = 24.3 g

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Q: HF → How many moles of HF are needed to produce 13.41 moles of hydrogen? [Answer Here] a. b. What…

A: (a) Balanced chemical equation: 2 HF (g)  ------>  H2 (g) +  F2 (g) By stoichiometry of reaction:…

Q: 18.45 mol ZnCI2 = _______g ZnCI2

A: Data: The number of moles of ZnCl2= 18.45 mol The molar mass of ZnCl2 = 136.286 g/mol To find: Mass…

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Q: B. Accutane is found to contain 79.95% C and 9.40% H with the remainder being oxygen. Its molar mass…

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Q: how many grams are in 0.658 mol of calcium phosphate [Ca3(PO4)2].

A: Molar mass is the mass of 1 mole of a substance.

Q: 4. Subtract 3.58 x 10-2 kg from 1.41 x 101 ng and report your answer in g.

A: We know that kilogram, nanogram and gram are the units of mass.

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Q: Which of the following contains the least number of moles of Ag? a.30.0 mL 0.55 M AgNO3 b.100 mL…

A: To find: the option with the least number of moles of Ag.

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Q: Module 5 1.) How many formula units are in 1 mole of (NH,),SO,? 2.) How many moles are in 8.5 x 1026…

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Q: 1. Determine the number of particles in 1.54 mols of KNO3.

A: Hello. Since your question has multiple parts, we will solve first question for you. If you want…

Q: MOLES/MOLECULES T04/S14 If a sample of POCI, is found to contain 6.58 mol of O atoms how many moles…

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Q: Which of the following is the correct unit for equivalent weight? a)eq/mol b)eq/g c)g/eq d)mol/eq

A: The unit for equivalent weight is given below.

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Q: A compound is found to contain 11.21 % hydrogen and 88.79 % oxygen by mass. What is the empirical…

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Q: 3 The density of liquid benzene, C,H, is 0.879 g/cm at 15 °C. How many moles are there in 36.5 mL of…

A: Given that:  Density of benzene = 0.879g/cm3 Volume of benzene = 36.5mL  Using the formula of…

Q: 27. Select the correctly paired empirical and molecular formulas Empirical CH Molecular C,H2 C,H2…

A: The correctly paired empirical and molecular formula is given below.