Determine the mass, in grams, of 0.315 moles of Co (1 mol of Co has a mass of 58.93 g).

Q: Calculate, to the correct number of significant figures, how many molecules of Sg are contained in…

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Q: The molar mass of NBr3 is (2.22 x 10² mol Br₂)(- mol NBr3 g mol NBr3 -) = mol Br₂ g NBr3 mol NBr3 g…

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Q: A sample of sulfolane, C.H3O,S, contains 5.00 x 1024 atoms. How many moles of sulfolane are in the…

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Q: What is the empirical formula of a compound with 69.72% carbon, 11.7% hydrogen, and 18.58% oxygen…

A: Given,the mass percent of Carbon ( C ) = 69.72 %                                  Hydrogen ( H ) =…

Q: A model of the butanal molecule is shown in the window below. ball & stick + labels ited a. How many…

A: From the model, Butanal=> CH3>CH2CH2CHOMolecular formula of butanal is C4H8O. Mole is the SI…

Q: 18. You have arrived on a planet where S2, not 02, is the gas used as fuel in combustion reactions.…

A: Reactions lead to the complete consumption of one of the reactants that will limit the product…

Q: Convert 4.18 x 1021 molecules/formula units of X4Z, into grams of the same compound. (Assume that…

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Q: Calculate the molar mass. a. Co(NO3)2 x 6H2O b. Ni(NO3)2 x 6H2O

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Q: 7.00 g of a certain Compound X , known to be made of carbon, hydrogen and perhaps oxygen, and to…

A: we need to calculate the molecular formula for the compound

Q: The amino acid arginine has an approximate molar mass of 174 g/mole. If the percent composition is…

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Q: There are ______ x 1023 molecules of CO2 in 50.0 g of CO2.

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Q: Find the number of moles of oxygen atoms in 0.0481 g of CO2(g). The molar mass of CO2 is 44.01 g/mol

A: number of moles of CO2 = mass of CO2/ mol. mass of CO2 =0.0481/44 =0.00109 moles of CO2  we know in…

Q: a. Two compounds have the same composition: 92.25% C and 7.75% H. Obtain the empirical formula…

A: Empirical formula is the simplest formula of a compound where atoms of participating elements are…

Q: A sample of Water, H2O, has a mass of 55 grams. Determine the number of moles in the sample.

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Q: An average cup of coffee contains about 125 mg of caffeine, CRH10N4O2. How many moles of caffeine…

A: Moles of the caffiene can be determined by suing the formula given below as: Moles of Caffeine=Given…

Q: In a combustion,27.90 g CH4 combine with 110.5 g O2 to make 76.50g CO2 and 62.65g H2O. Does this…

A: As mass in reactant and product side is not equal so it does not follow law of conservation of mass.

Q: How many atoms are present in (6.78x10^1) g of an element with the following molar mass.…

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Q: What is the molar mass of  sulfuric acid, H2SO4 You may assume H has a molar mass of 1 g/mol, S has…

A: For question 1, we have to find the molar mass of H2SO4. For question 2, we have to find the mass of…

Q: A compound of C,H,N and O has the following percent composition by mass: 17.8% C, 2.22% H, and 20.7%…

A: Empirical formula represents the simplest whole number ratio of elements that are present in a…

Q: Molar mass==Mass of 1 mol of substanceMass of 6.022×1023 particles of substanceMolar mass=Mass of 1…

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Q: Consider the mixture of propane, c3h8 and o2 a. What is the percent, by mass, of carbon in propane?

A: The molecular formula of propane is = C3H8 The mass percent of the carbon in propane is =?

Q: There are ______ x 1023 molecules of CO2 in 50.0 g of CO2.

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Q: Given : 1CH4 (g) + 2O2 (g) —> 1 CO2 (g) + 2 H2O (g) Q. calculate the mass of c02 gas formed when…

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Q: How many molecules of C7H10O2N2 are there in 2.648⨯10-2 moles of that substance?

A: To determine the number of molecules of C7H10O2N2 in 2.648⨯10-2 moles, we can use Avogadro's number,…

Q: You are given a 10.0 grams sample of ethanol (CH3CH2OH).   Explain how you can use the molar mass of…

A: The Avogadro’s number of any species is defined by a mole. The Avogadro’s number, NA, is equal to…

Q: The number of moles  of 3.06 X 10–3 g of C2H5NO2 is 0.0408 moles.

A: In international system of units, Mole is considered as a unit which helps to calculate the amount…

Q: Q2. Combustion of 11.5 g sample of a compound containing C, H, and O yields 13.5 g of H₂C and 22 g…

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Q: Consider the following chemical reaction:            CH4   +    2O2   ------------------>    CO2…

A: The considered reaction is, CH4 + 2 O2→CO2 + 2 H2O

Q: 17. Complete combustion of 2.90 g of a hydrocarbon produced 8.94 g of CO2 and 4.12 g of H2O. What is…

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Q: N2(g) + 3H2(g) —> 2NH3(g) What mass in grams of Ammonia (NH3) is produced from 10 moles of nitrogen…

A: Given No. of moles of N2 = 10 moles Molecular weight of NH3 = 17 g mol-1   Formula Used mass of…

Q: Without using a calculator, which has the greater mass: One mole of carbon atoms or one mole of…

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Q: Individual atoms, ions, molecules are small and light that can't be measured with nomal balances.…

A: The given mole concept practice explain that we can do conversion between mass and mole using molar…

Q: A given sample of Xenon flouride compound contains molecules of the same type XeFn where n is some…

A: Chemical formula which shows number of chemical elements and total element’s number available in…

Q: mercury occurs as a sulfide one called cinnabar, Hgs. How many moles of HgS are contained in a…

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Q: Question 11 How many moles of carbon are present in 1.37 x 10 25 atoms of carbon? O 8.25 moles O…

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Q: A compound is 7.7% (by mass) hydrogen and 92.7 % carbon. It has a molecular weight of 52 g/mole.…

A: Empirical formula are the formula which represent simplest ratio of an element present in a given…

Q: 1.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

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Q: Calculate the molar masses for NH, and SF. NH, molar mass: SF molar mass: How many grams of NH3 are…

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Q: 2.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Empirical formula :- The formula which gives the simplest whole number ratio of atoms of various…

Q: Use the the mole - mole calculation to determine the grams of CO2 produced during the combustion of…

A: Combustion of hydrocarbons can be defined as the process in which a hydrocarbon is burned in the…

Q: Calculate the mass, in grams, of 322 atoms of iron, Fe (1 mol of Fe has a mass of 55.85 g).

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Q: How many moles of carbon in 70.43 grams of C6X12Y4? (Assume the molar mass of C6X12Y4 is 295.8)

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

Q: S + 6 HNO3 --> H₂SO4 + 6 NO2 + 2H₂O In the above equation how many grams of water can be made when 2…

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Q: The complete combustion of 4.10 g of a hydrocarbon produced 12.4 g of CO, and 6.35 g of H, 0. What…

A: We have hydrocarbon meaning only C and H so we don't have to care of O. Carbon involved in…

Q: Ammonia reacts with O₂ to form either NO(g) or NO₂(g) according to the following UNBALANCED…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: A mixture of 132.1 g of P and 136.5 g of O, reacts completely to form P¸O, and PO,0. Find the masses…

A: We have to calculate the mass of product formed.

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.