11.An unknown compound is comprised of 25.9% N and 74.1% O. The molecular mass of the compound is 216 g/mol. a) Determine the empirical formula. b) Determine the molecular formula.

Q: Determine the number of moles in 2.42 × 10²³ formula units of BaBr₂.

A: Formula units of BaBr2 = 2.42 x 1023  Moles of BaBr2  = ?

Q: I figured out that .0068 moles CaCl2x2H2O are present in 1.00g CaCl2x2H2O. My next question is "How…

A:

Q: A compound contains iron and bromine. A sample of the compound contains 3 g of iron and 11.39 g of…

A: A sample of the compound contains 3 g of iron and 11.39 g of bromine.  as mass is provided , we can…

Q: 5. Determine the empirical and molecular formula for the following compounds. a. A pure compound is…

A: Hello. Since the question contains multiple sub-parts, the first sub-part will be only answered. In…

Q: How many grams of ethanol C2H6O are in a 3.0 mole sample?

A:

Q: Determine the number of moles in 1.19 × 10²³ formula units of MgCl₂.

A: It is known that one mole of a substance is equal to 6.022×1023 formula units of that substance…

Q: Copper(II) fluoride contains 37.42% F by mass. Use this percentage to calculate the mass of fluorine…

A: Mass percentage of an element in a given compound is the mass of that particular element divided by…

Q: Label the diagram to correctly convert 1.02x1024 molecules of O, to moles of O, X- :: 1.02x1024…

A: Welcome to bartleby !

Q: 0.6 moles of strontium phosphate contains how many oxygen atoms?     A. 0.8 NA   B. 2 NA   C.…

A: Answer: Molecular formula of Strontium Phosphate: Sr3(PO4)2

Q: Moles of Mass of A atoms Divide by molar mass A atoms A to X Divide by mole ratio Convert ratio to…

A: Empirical formula: It is the formula that is used to represent the proportions of all the elements…

Q: How many atoms are in 0.0015 mole of copper

A: In this question, the number of moles of copper is provided. The number of atoms present in the…

Q: 3.5 mole of NH3 are ____ grams I don’t understand the formula to answer this question

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Determine the number of moles in 5.00 × 10²³ formula units of BaBr₂.

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: How many moles are contained in 13.8 g of BaCl, • 2 H,O? Select one: a. 17.7 mol b. 0.0565 mol c.…

A: Given mass of BaCl2.2H2O= 13.8 g Molecular weight of BaCl2.2H2O = 244.26 and we know the formula of…

Q: How many moles of NBR3 can be made from 2.22 x 102 moles of N2 ? N2 + 3 Br2 → 2 NBr3 + 44.0 kJ mol…

A: N2   +  3 Br2   --->  2 NBr3   given 2.22 × 10² moles of N2

Q: 2. A compound contains 70.9 percent potassium and 29.1 percent sulfur. Determine the empirical…

A: To find the empirical formula of the compound, assume the given percentage as grams of element. Then…

Q: Calculate the number of moles in each sample. 74.9 g H2CCl2   n(H2CCl2)=??

A: Given, 74.9 g of dichloromethane.

Q: Determine the empirical formulas of the compoundswith the following compositions: (a) 40.1 percent…

A: a) Calculate the number of moles of each element, 40.1 g C(1 mol/12.0107 g)=3.3387 mol C 6.6 g H(1…

Q: compound contains 1.4966 g of carbon and 0.5034 g of hydrogen. find the empirical formula

A: When two or more atoms combine with each other, they will form molecule and those molecules has…

Q: 1. A compound is 48.38% carbon, 8.12% hydrogen, and 53.5% oxygen by mass. Find its empirical…

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Q: Derive the molecular formula of vanillic acid based on the instructions given. Vanillic acid is a…

A: Given that : % of C = 57.14 % % of H = 4.80 % % of O = 38.06 % The molar mass of vanillic acid =…

Q: A sample contains 27.1 g of calcium oxide. How many moles of calcium oxide are in the sample ? a.…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: Which would contain 9.03 × 1023 oxygen atoms? Avogadro Constant = 6.02 × 1023. 3.0 mol H2O   0.75…

A: This problem can be solved by knowing that one mole of substance consists of 6.022×1023 particles.

Q: sample of a salt wasfound to contain 2.83 g of calcium and 2.68 g of fluorine. a) Calculate the…

A: Mass of calcium = 2.83g  Mass of fluorine = 2.68 g  Total mass of salt = mass of Ca + mass of F =…

Q: MOLAR VIEW T03/S11 If a sample of (NH4)2HPO4 is found to contain 3.79 mol of NH4* ions how many…

A: The reaction can be written as follows: (NH4)2HPO4→2NH4++HPO42-

Q: A compound contains arsenic and oxygen as its only elements. A 1.626g sample of the compound…

A: A 1.626 g of the sample contain 1.060 g of arsenicSo, Oxygen = (1.626 -1.060)g…

Q: A crime scene investigator finds a 3.5 g (C10H14N2) sample of nicotine and sends it to the lab for…

A: Please find the attachment.

Q: after substantial heating, 0.476g of uranium produced 0.524g of a compound with oxygen. Determine…

A: The mass of uranium is = 0.476 g The mss of uranium oxide is = 0.524 g The empirical formula of the…

Q: How many moles of Ge (element number 32) are in a 217.4 g sample? 1.497 mol 0.3340 mol…

A: We have given that Mass of Ge = 217.4g  Atomic mass Ge = 72.63g/mol

Q: Label the diagram to correctly convert 141.8g of Cl, to moles of Cl : 71.9 g Ch : 141.8g Cl : 1 mol…

A:

Q: Determine the number of neon atoms in a lamp that contains 20.17 g of neon gas sample.

A: Given mass of Neon gas = 20.17 g Number of atoms in given mass of Neon = ?

Q: An unknown sample contains 84.415 % carbon, and 15.585 % hydrogen. It has a molar mass of…

A:

Q: Radioactive sodium pertechnetate is used as a brain-scanning agent in medicine. Quantitative…

A: Given : Mass of compound = 0.896 g Mass of Na = 0.111g Mass of Tc = 0.477 g

Q: 1. How many grams of water (H20) are there in 2 mol of water? 1 mol H20 = g (round to hundredth)

A: atomic mass of H = 1 g/mol atomic mass of O = 16 g /mol 1 mol H2O =  2 x1 + 16 = 18  g H2O

Q: Hi. I am trying to calculate the percent of water in an uknown hydrate. The given data is: mass of…

A: Law of conservation of Mass :- Law of conservation of mass states that mass can neither be created,…

Q: 27) Determine the number of moles of compound within 25.0 g of AlI(OH), A) 0.321 mol B) 36.03 mol C)…

A:

Q: How many formula units are in 3.25 moles of (NH4)2SO4? [?]x10 formula units

A: Given: Number of moles of (NH4)2SO4= 3.25 mol The number of formula units of (NH4)2SO4 =? The number…

Q: Determine the empirical formula of a compound that has the following percent composition: 65.25%…

A: Answer:- This question is answered by using the simple concept of calculation of empirical formula…

Q: (c) An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by…

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Q: A. Determine the empirical formula for a compound with mass percent 48.91% carbon 18.51% hydrogen…

A: Suppose total mass of the compound as 100 g.          Mass of C=48.91 gMass of H=18.51 gMass of…

Q: empirical formula

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Q: How many formula units of CaCO3 are contained in 350. g CaCO3?

A:

Q: The sample is analyzed and found to contain three elements, C, H and O.  A 2.147 g sample of the…

A: The given data: The mass of the sample = 2.147 g The mass of the CO2 (g) = 4.297 g The mass of H2O…

Q: 7.to get the empirical formula you divide each number of moles by a.The largest amount of moles…

A: To get the empirical formula you divide each number of moles by :

Q: Mass of zinc coating =0.15g Number of moles of iron = 0.0184 mol Number of moles of zinc = 0.00229…

A: The galvanized iron contains both iron and zinc, whereas the iron core contains only iron. We are…

Q: Consider the 124g sample of the compound? Determine the moles of calcium chloride present (a)number…

A:

Q: a. 1.25 moles of aluminum chloride ). 3.35 moles of sodium hydrogen carbonate C. 4.25 millimoles of…

A:

Q: An unknown substance is empirically determined to be 12% carbon by weight 75% hydrogen, and the rest…

A: In molecular weight atoms should be considered as present in molar mass.

Q: The molar mass of carbon dioxide is 44.009 g/mol. A mass of 220.0 grams of carbon dioxide is…

A:

Q: ) How many grams of MgI2 is present in a 0.4745 g sample that is 53.21% MgI2 (278.11 g/mol)? B)…

A: Weight of sample = 0.4745 gm (w/w)% = 53.21 % Molar mass of MgI2 = 278.11 g/mole Molar mass of AgI =…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.