How many moles of acetone (C3H6O) are in 135 grams of acetone?

Q: A particular ore of lead, galena, is 10.0% lead sulfide, PbS, and 90.0% impurities by weight. What…

A: we  need to calculate mass of Pb in the ore

Q: A compound of C and H burns in the presence of oxygen to produce 46.39 g CO2 and 18.99 g H2O. Given…

A: 18 gm H2O contains 2 gm H  18.99 gm H2O contains = (18.99*2)/18 = 2.11 gm H  44 gm CO2 contains 12…

Q: how many molecules of water are present in 75.0 g of H20?

A: 1 mole of water that is 18 g contains 6.022 * 1023 molecules.

Q: Anhydrous CuSO4 can be used to remove water (an impurity) from gasoline. When the CuSO4 absorbs the…

A: Reaction corresponding to absorption of water by copper sulfate is: CuSO4+5H2O→CuSO4.5H2O Hence, 1…

Q: How many grams of hydrogen are in 36.56 g of propane, C3H8

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Q: How many moles of atoms are contained in 5.80 X 1024 C2H2 molecules?

A: Number of molecules is equal to the mole multiply by avagadro number.   Avagadro number is equal to…

Q: Calculate the moles of anhydrous CuSO4 in the sample above.

A:

Q: How many fluorine atoms are present in 5.85 g of C2F4?

A: 1 mole of any substance contains 6.022 x 1023 atoms or molecules or particles. Here 6.022 x 1023 is…

Q: What is the molecular formula of a compound that is composed of 0.186 g C, 0.0390 g H and 0.108 g N…

A: Given: The mass of carbon (C) is 0.186 g The mass of hydrogen (H) is 0.0390 g The mass of nitrogen…

Q: How many moles of S are in 23.6 g of allyl sulfide (C3H5)2S? Express your answer to three…

A: Step → 1              Given,                            mass of aluye sulfide (C3H5)2 5 = 23.6 g…

Q: How many molecules are in 363 g of CBr4?

A: Mass of CBr4 = 363 g Molar mass of CBr4 molecule =  331.63 g/mol

Q: What is the total mass of oxygen contained in 5.2 g of benzoic acid (C6H5COOH)?

A: This is mole concept reactions

Q: 2. 5.88 g of hydrated calcium chloride CaCl,•xH,O is treated with excess K2SO4 in a double…

A:

Q: How many kilograms of chlorine are in 27 kg of each of the chlorofluorocarbons: CF2Cl2 ; CFCl3 ;…

A:

Q: How many moles of MgCl2 are present in 45.0 g of MgCl2?

A: Since, Moles is the ratio of mass to the molar mass of that atom or molecules. Thus,

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.