Question

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 the subscripts. Answer: The empirical formula of a compound is CH2, and its molar mass is Is its molecular formula? Select one: A. C4H8 B. CH2 C. C3H6 D. C2H4 E. C5H10

Answer 1

The molar mass of a compound can be calculated by adding the Standard atomic masses of the constituent atoms in almol. In Cusou It consists of three atoms Ca, s o there are four oxygen. Somultik 4 with atom mass y god oxygen and add all of them? Atomic mass of 'Cu is 63.54 g/mol Adomic mass of 'S is 32.065 2 Atomic mass of 'o' is 15.99 21 Now = 63.5 46 +32.065 + 15 : 9984 Molar mass of Cuso. - 15.9.62 gled

Q2. It can be calculated as given I below Consider the mixture of coog and calculate the values from the given percentages. It will be 30.45 g N and 69 5590 Calculate moles of nitrogen appeare using = 2.145 mol Colaktan oles of oxygen Preleso = 99, 100e = 4.347 To calculate Ecoperical formula MOND

Date. Page. take ratio of moles of nitrogen and oxygen holesn = 2.145 wb moles 4.347 2 . Emperical formula = N, O2 To calculate Molecular formula Molecular formula mass = 92.02 mg Emperical formula mass 46.0 in Molecular formule – 2 x No = N Ou We need to multiply the ratio value with the Emmerical formula !

Ympressions Date Page Similarly from Chuestions, dB och trore gant lote CCH - Emferical formula mass (CH₂) = 12 + 2 = 14 Molecular for mitä mass 1 423 Emberisal formula mass 4 - 3 Molecular formula = 3 C CH ₂ )