The empirical formula of a compound containing carbon, hydrogen and bromine is C₂H₄Br. The molar mass of this compound is 215.90 g/mol. What is its molecular formula? ------ The mineral orpiment, having the empirical formula As2S3, was used in ancient times as a cosmetic.  How many grams of arsenic are present in 4.89 g of orpiment? Express your answer to 3 significant figures.  ? g As

Q: The mole is a counting number that allows scientists todescribe how individual molecules and atoms…

A: Molecular weight of Cu(OH)2 = 97.562 gm/mol  Weight of Cu(OH)2 = 23.45 gm  Moles = weight/mol. wt. =…

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A: From the amount of CO2, H2O and N2 formed, we find out the amount of C, N and H present in the given…

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Q: A compound was found to contain 115.49g of Ca, 92.16 g of O, and 5.82 g of H. What is the total mass…

A: mass of Ca = 115.49g mass of O = 92.16 g mass of H =  5.82 g  Molar mass of Ca = 40.078 g/molMolar…

Q: The chemical formula for calcium hydroxide is: Ca(OH)2 Calculate the molar mass of calcium…

A: we need to calculate the molar mass of Ca(OH)2

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Q: How many grams of lithium nitrate will be needed to make 200.0 grams of lithium sulfate, assuming…

A: The balanced chemical equation is: Pb(SO4)2 + 4LiNO3 →Pb(NO3)4 + 2Li2SO4(s)

Q: a) What is the mass of 2.450 x 10²⁴ atoms of tungsten (# 74)? (Be sure to write your units, chemical…

A: The solution is shown in the image below-

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A: 1- First calculate the moles of compound XBr3  moles of XBr3 = ( moles of Br ) / 3  moles of XBr3 =…

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A: Given: Mixture of metal X and Z. And mass percent of X and Z in the mixture.

Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg3 (Si₂05), (OH)2 An…

A: 1 mole of A2B2 contains 2 mole A and 2 mole B

Q: 301.4 g of SO2(g), 409.3 g of CaCO3(s), and 101.7 g of O2(g) react in the following fashion: 2…

A: To determine the mass of CaSO4(s) produced, we first need to determine the moles of each reactants:…

Q: 717.7 grams of isomaltitol, C12H24O11, was combusted in a furnace completely in an excess oxygen.…

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Q: A mixture consisting of 11.3 g of calcium fluoride, CaF2, and 10.8 g of sulfuric acid, H2SO4, is…

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Q: 4PC|3(s) Phosphorus trichloride, PCl3, is a commercially important compound used in the manufacture…

A: Answer:-This question is answered by using the simple concept of stoichiometry which involves the…

Q: Using the formula Mn(ClO₄)₄ (MM = 452.74), what is the percent by mass of Mn in the compound?

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Q: The fuel used in many disposable lighters is liquid butane, C4H10 . How many carbon atoms are in…

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Q: Silane, SiH4, is prepared according to the following equations: Si(s)  +  3 HCl(g)  →  HSiCl3(l)  +…

A: 1 mole of any substance have 1 Avagadro number molecules  1 Avagadro number molecules = 6.023*1023…

Q: ? The balanced chemical equation for this reaction is shown in the image below. Enter your answer as…

A: GivenSodium =5 gOxygen = 5 g

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Q: The chemical formula for diethyl amine is: (CH;CH,),NH Calculate the molar mass of diethyl amine.…

A: The chemical formula of diethyl amine is given as (CH3CH2)2NH.

Q: Geosmin is an organic compound that is partly reponsible for the smell of soil. It has a molar mass…

A: 1st) Calculate the mass of C, H, O2nd) Calculate moles of C, H , O3rd) Calculate the empirical…

Q: Determine the empirical formula of a compound containing 40.6 grams of carbon, 5.1 grams of…

A: Given that -  Mass of Carbon = 40.6 g  Mass of Hydrogen = 5.1 g  Mass of oxygen = 54.2 g  Molar mass…

Q: What is the mass percentage of carbon in C7H11O3? Express your answer as a percentage (i.e., out of…

A: Mass percentage of element in compound is defined as percent ratio of element mass to the whole…

Q: The chemical formula for hydrogen bromide is HBr. A chemist determined by measurements that 0.030…

A: Given data -: Number of moles of HBr -: 0.030 moles  Molecular weight of HBr -: 1+80 = 81 g/mol…

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Q: How many carbon atoms are in 57.9 g glucose (C6H12O6)?  (Provide your answer with the correct…

A: mass of glucose (C6H12O6) = 57.9 gNumber of carbon atoms = ?Note: molar mass of glucose (C6H12O6) =…

Q: 2. Iron reacts with chlorine gas to form iron(II) chloride: 2 Fe(s) + 3 Cl₂(g) →→2 FeCl,(s) What…

A: Two mole of iron react with three mole of Cl2 and produced two mole of FeCl3

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Q: mass in grams of  1.74 x 10^24 atoms of beryllium

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