A mixture contains 0.291 mol of Mn2O3 and 23.5 g of MnO2.  How many mols of Oxygen are in the mixture?

Q: Mercury can be obtained by reacting mercury(II) sulfide, HgS, with calcium oxide, CaO. How many…

A: Given: The reaction is as follows:  4CaO+4HgS→4Hg+3CaS+CaSO4 The mass of Hg produced=84.7 g. The…

Q: 4. Calculate the number of moles of CuSO4•5H2O in 100 g of the solid.

A: Given details, Mass (m) = 100g Atomic mass of CuSO4.5H2O = 249.68 g/mol To calculate the number of…

Q: How many molecules are there in 16.3 mil of CO2?

A:

Q: What is the mass (in kg) of 6.89 x 1025 molecules of CO2?  The molar mass of CO2is 44.01 g/mol.

A:

Q: A mixture is 19.9% NaCl, 21.0% CaCl2, and 59.1% NaBr. What mass of the mixture contains 0.485 moles…

A: mass of the mixture that contains 0.485 moles of chloride ions moles of sodium ions present in 24.0…

Q: If 1.800 g of aluminum reacted with an excess aqueous HCl to produce 8.894 g of aluminum chloride.…

A: Answer:- firstly a balanced chemical equation is written then using the mass , mass of Al and cl is…

Q: What mass of Ca(NO3)2 is required to prepare a solution containing 0.595 mol of Ca(NO3)2?

A: For determination of the mass of Ca(NO3)2 needed for a solution with 0.595 moles of Ca(NO3)2, we…

Q: Combustion of a hydrocarbon in a limited supply of air produces CO in addition to CO2 and H2O. When…

A: Given data :

Q: 5.000 gram sample of hydrated beryllium carbonate, BeCO3·xH2O is heated according to the procedure…

A: To calculate the number of moles of H2O and BeCO3.

Q: Combustion of a hydrocarbon in a limited supply of air produces CO in addition to CO2 and H2O. When…

A:

Q: How many moles of Al are necessary to form 67.8 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A: Molar mass of Al=26.98 g/mol Molar mass of Br2 =159.808  g/mol The molar mass of AlBr3 =266.69 g/mol…

Q: Butanol (C4H9OH) is commonly used as a lighter fluid.  Consider the combustion of butanol in the…

A: For the combustion of butanol, a balanced chemical reaction can be depicted as;…

Q: Aluminium metal reacts with sulphuric acid, H2SO4, to yield aluminium sulphate and hydrogen gas.…

A: Aluminium metal reacts with sulphuric acid, H2SO4, to yield aluminium sulphate and hydrogen gas. The…

Q: The active ingredient in many antacid tablets is calcium carbonate, CaCO3. How many moles of calcium…

A: The molar mass of calcium carbonate is 100.1 g/mol.

Q: Suppose a student starts with 2.3865 g of a sand mixture and separates the components into 1.3012 g…

A: The objective of this question is to calculate the percentage of SiO2 in the starting mixture of…

Q: What is the percent by mass of KClO3 in the original mixture

A:

Q: What mass of hydrogen peroxide (H2O2) must decompose to produce 65.88 g of H2O?

A: Given data: The mass of H2O = 65.88 g. To find: The mass of hydrogen peroxide (H2O2).

Q: Consider the following chemical reaction: 3Mg + B₂03 → 2B + 3 MgO. What mass in grams of magnesium…

A:

Q: D. Aluminium metal reacts with sulphuric acid, H2SO4, to yield aluminium sulphate and hydrogen gas.…

A: In balance reaction 2 mole of aluminium react 3 mole sulphuric acid and produced 3 mole H2

Q: If carbon has a molar mass of 12g and oxygen has a molar mass of 16g. What is the molecular mass of…

A: Consider the given information is as follows: Molar mass of carbon = 12 g Molar mass of oxygen = 16…

Q: What mass of hydrogen peroxide (H2O2) must decompose to produce 65.88 g of H2O?

A: The given data contains, mass of water = 65.88 g

Q: How many moles of P 4 O 10 in 1.11 grams of P 4 O 10 ? [The Molar Mass of P 4 O 10 283.886 g/mol.]

A:

Q: A sample of gas mixture from a neon sign contains 0.0852 mol Ne and 0.0266 mol Kr. What are the mass…

A:

Q: Polyethylene is a polymer consisting of only carbon and hydrogen. If 2.300 g of the polymer is…

A:

Q: Lime, CaO, is produced by the reaction CaCO3 → CaO + CO2. What mass of CaO is obtained by the…

A: The stoichiometric coefficients are the numbers we use to make sure our equation is balanced. We can…

Q: 3. What is the mass (in kg) of 6.89 x 1025 molecules of CO2? The molar mass of CO2 is 44.01 g/mol.

A:

Q: During a laboratory experiment, a student initiated a reaction with 19.5 g of NaBH4 and excess BF3.…

A: Mass of NaBH4 = 19.5 g  BF3 = excess Mass of B2H6 gas = 7.00 g  The percent yield of B2H6 = ?…

Q: How many grams of oxygen are contained in 82.4 g of Al2(CO3)3?

A: Given :- mass of Al2(CO3)3 = 82.4 g  To calculate :- amount of oxygen (g) in the given amount of…

Q: A 12.21 g sample of a compound that contains sulfur is analyzed by precipitating all the sulfur as…

A: Given: The mass of the sample = 12.21 g The mass of BaSO4 = 11.227 g Standard data: The molar…

Q: 3) Consider the balanced equation: 2Al + Fe;N2 2AIN +3Fe. If 5.23 g AIN were produced in this…

A:

Q: Calculate the mass, in grams, of 0.433 mol of CO2.

A: Mass in grams from moles can be calculated by using the formula given below as; Mass=moles…

Q: organic compound containing C, H, and O is burned completely in oxygen, 8.1 g of CO2 and 4.956 g of…

A: Mass of CO2 = 8.1 g molar mass of CO2 = 44.0 g/mol Moles of CO2 = mass/MM    = 8.1/44 = 0.184 mol…

Q: A person drinks 1.50 × 103 g of water, H2O, per day. How many moles is this?

A: Given,Mass of water = 1.50×103 gMolar mass of water is 18.015 g/mol

Q: If 36.0 g of C3H8 and 112 g of O2 are placed in a closed container and the mixture is ignited, what…

A: The chemical reaction is, C3H8 + 5O2 ---> 3CO2 + 4H2O From the reaction, we can conclude that 1…

Q: How many moles of CO2 are contained in 42.0 x 1024 molecules of CO2?

A: Given:Molecules of CO2 = 42.0 x 1024 moleculesWe need to find the moles of CO2 containing the given…

Q: How many moles of Al are necessary to form 52.2 g of AlBr₃ from this reaction

A:

Q: Combustion of a hydrocarbon in a limited supply of air produces CO in addition to CO2 and H2O. When…

A:

Q: 6. Çalculate the mass (in g) of 2.3 x 1021 molecules of CO2.

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

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.