i) Calculate the number of moles in 4.79 g of N2O4. ii) How many grams are found in 2.145 mol of HNO2? iii) Find the number of moles in 1.1 g of H2O?

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A: grams of carbon tetrabromide contain 2.48 grams of Br  will be found like this:

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Q: A 0.370-mol sample of a metal oxide (M2O3) weighs 55.4 g. (a) How many moles of O are in the sample?…

A: A 0.370-mol sample of a metal oxide (M2O3) weighs 55.4 g. (a) How many moles of O are in the sample?…

Q: How many moles of H2SO4 do you have if you there are 1.64x 10^12 molecules of H2SO4?

A: Data given: number of molecules of H2SO4 = 1.64 X 1012 Atomic weight of the sulphuric acid = 98.07…

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Q: Consider a sample containing 0.750 mol0.750 mol of a substance. How many atoms are in the sample if…

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Q: How many moles of K are there in a sample of K that contains 4.79×1024 atoms?

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Q: Claculate the moles of chlorine atoms in 0.0615 grams of 1,2- dichloroethane C2H4CL2.

A: The formula for the calculation of number of moles is as follows:

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Q: . Calculate the following: a. Calculate the number of moles in a 56g sample of sulfur trioxide…

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Q: How many atoms of oxygen are in 3.52 moles of calcium nitrate?   Select one: a. 8.48 x 10^24 atoms O…

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Q: How many atoms are present in 123 g of sodium cyanide (cyanide = CN-)?

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Q: 1. How many GRAMS of nitrogen are present in 4.54 moles of nitrogen monoxide ? grams. moles. 2. How…

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A: Number of Moles = (Mass of the Sample)/(Molar Mass)   Number of Atoms or Molecules = (Number of…

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Q: Consider a sample containing 0.750 mol of a substance. How many atoms are in the sample if the…

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A: Here boron trifluoride is BF3 where the molar mass of boron is 10.81 g/mol, molar mass of fluorine…

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.