How many sodium ions are contained in 13.8g of Na2SO3? The molar mass of Na2SO3 is 126.05g/mol.

Q: A compound has an epirical formula of CH2O. If the molar mass of the compound is 60g/mol, what is…

A: emperical mass=12+2+16=30 n=60/2=2

Q: What is the molecular mass of the compound? molecular mass = g mol-1

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Q: A vitamin syrup for infants contains 27.44 mg of zinc sulfate monohydrate (ZnSO4.H2O) and 100.00 mg…

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Q: How many moles are contained in 13.8 g of BaCl2 • 2 H2O?

A: Formula to calculate the number of moles of a substance is as follows: Number of moles = mass of a…

Q: many molecules were used

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Q: 2 Mg(s) + 3 N2 (g) --> 2 MgN3 (s) How many moles of N2 will be used to produce 115 grams of MgN3?

A: The given reaction is,             2 Mg(s) + 3 N2 (g) --> 2 MgN3 (s) We have, mass of MgN3 = 115…

Q: How many sodium cations are there in 20.0 g of sodium phosphate (Na3PO4 163.94 g/mol)?

A: * Mass of sodium phosphate = 20.0 g * Moles of Na3PO4 = Mass of Na3PO4 / molar mass of Na3PO4 = 20.0…

Q: moles

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Q: How many grams of magnesium are required to react with 10.0 mol HCI? Mg(s) + 2 HCI(aq) MgCl2(aq) +…

A: Given, The balanced chemical equation, Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g) From the balanced chemical…

Q: how many molecules of N2O4 are in 76.3 g of N2O4? the molar mass of N2O4 is 92.02 g/mol

A: Mass of N2O4 is 76.3 g Molar mass of N2O4 = 92.02 g mol-1 Number of moles of N2O4 = mass of…

Q: How many sodium atoms are present in 17.06g of NaCl?

A: Given : Mass of NaCl = 17.06 g Molar mass of NaCl = Atomic mass of Na + Atomic mass of Cl  =>…

Q: A sample is found to contain 66.8% NaHCO3 by mass. What is the mass of NaHCO3 in 4.25g of the…

A: Mass percent :- The mass of a substance present in 100 grams of sample is called its mass percent .…

Q: How many hydrogen atoms are present in 75.0 of g H2O?

A: Mass of water, H2O = 18.016 g/mol Mass of water = 75 g Moles of water, H2O = Mass Molar mass=75…

Q: Calculate the number of mol corresponding to:a. 15.0 g NaCl b. 15.0 g Na2SO4

A: Given, Mass is given. Formula Used, moles (n)=Given MassMolar Mass

Q: How many molecules of butane are contained in 25.0 mL of butane? The density of butane is 0.6011…

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Q: What is the molar mass of NaOH? H2C2O4? H2C2O4·2H2O?

A: Calculation of the molar mass of NaOH--- Element Symbol Atomic weight Number of atoms Total mass…

Q: Iron(II) sulfate, FeSO4, is prescribed for the treatment of anemia. How many moles of FeSO4 are…

A:

Q: 1.000g MgCO3 is reacted with 0.750 g HCl. MgCO3 + 2HCl  ⎯→ MgCl2 + CO2 + H2O What is the…

A: The given reaction, MgCO3 + 2HCl   →  MgCl2 + CO2 + H2O Theoretical yield of the product is given…

Q: what mass of cu(io3)2 can be formed from 0.400g of cuso4.5h2o

A: We can determine mass of Cu(IO3)2 formed by considering the balanced equation : CuSO4. 5H2O + 2 HIO3…

Q: In 360 grams of Glucose(CGH1206) the number of moles of Glucose present is O 1 O 4 O 3 O 2

A: * Number of moles of substance = Mass of substance/molar mass of substance By using this we can…

Q: Hydrogen peroxide H2O2 is commonly used to clean bacteria in scrapes and cuts. It can be used as a…

A: 1 mol of a substance has   6.022×1023 (NA)   atoms/ molecules/ formula units of the substance.Number…

Q: What is the molar mass of H2SO4? (Molar mass of H = 1.0079 g/mol; S = 32.065 g/mol; O = 15.999…

A: 6.022×1023 = 1 mole = Avogadro Number Molar mass :-  The mass of one mole of atoms or molecules is…

Q: 3. 1.00 mol of PCl3 and 50.0 g of H2O

A: When PCl3 reacts with H2O then H3PO3 and HCl are formed.  PCl3 + 3H2O = H3PO3 + 3HCl  From the…

Q: Calculate the molar mass of CaCO3 and then calculate the amount of substance in 150.0g CaCO3

A: To calculate the molar mass of CaCO3 we need to know the atomic mass of each elements. And those are…

Q: How many moles of Feg04 are required to supply enough iron to prepare 0.843 mol Fe203? i mol Fe304

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Q: How many molecules of O2 are needed to makd 100 grams of CO2? Given: C3H8 (g) + 5O2 (g) --> 3 CO2…

A: Moles of CO2 in 100 g = mass/ molar mass = 100/44 = 2.273 Since 5 moles of O2 is producing 3 moles…

Q: Calculate mass (in grams) of sodium in 8.5 g of sodium-containing food additive. Na2C6H6O7 (sodium…

A: The molecular formula of the given compound is Na2C6H6O7. So, the molar mass of this compound is…

Q: Iron(II) sulfate, FeSO4FeSO4, is prescribed for the treatment of anemia. How many moles of…

A: Given, amount of FeSO4 =310 mg =0.31 gramMolar mass of FeSO4 =151.9  gmolwe are asked to calculate…

Q: Suppose a student starts with 2.4319 g of a sand mixture and separates the components into 1.3012 g…

A: percent of SiO2 in the starting mixture =    =Mass of SiO2 × 100/ Total Mass of the mixture =…

Q: How many moles of propylene (C;H6) are in 25.0 g of the substance?

A: Given :-  Mass of C3H6 = 25.0 g  To calculate :-  Number of moles of C3H6

Q: Starting with the following equation, Fe₂O₃(s) + Al(s) → Fe(l) + Al₂O₃(s) calculate the moles of…

A: Given :-  Fe₂O₃(s) + Al(s) → Fe(l) + Al₂O₃(s) mass of Fe = 755 g  To be calculated :-  number of…

Q: molecules

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Q: A molecule was determined to have a molar mass of 88.3 g/mol.  How many moles of the compound are in…

A: Mole Mole is a quantity that represents a collection of 6.022×1023 atoms or molecules. The term…

Q: . Aluminum metal is produced by passing an electric current through a solution of aluminum oxide…

A:

Q: How many molecules of CO2 are present in 0.6642 moles of CO2?

A: Generally, 1 mole has 6.022 x 1023 molecules with it.

Q: Liquid nitromethane was once widely used as an explosive but is now much more common as a fuel for…

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Q: How many molecules of epsom salt, MgSO4, make up 4.6 g of MgSO4?  The molar mass of MgSO4 is 120.37…

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Q: A bottle of the pain reliever ibuprofen (C 13H 18O 2, molar mass 206.3 g/mol) contains 500 200.-mg…

A: Number of moles of a chemical compound is used to express the amount of chemical compound present in…

Q: how many molecules are present in 0.340g of lead (IV) phosphate?

A: The number of molecules in 0.340g of lead (IV) phosphate are to be calculated. The mass of compound…

Q: How many moles of Sodium thiosulfate, Na2S2O3, are present in 31.7 g of Sodium thiosulfate.

A: The number of moles of a substance is the mass of that substance upon its molar mass.

Q: What mass, in grams, of C2H2 is needed to form 210.4 g of CO2? Assume excess oxygen.  2C2H2(g) +…

A: Given: 2C2H2(g) + 5O2(g)  →  4CO2(g) + 2H2O(g) Mass of CO2 = 210.4 g To find: Mass of C2H2 Solution:…

Q: The density of carbon tetrachloride is 1.59 g/mL. How many moles are present in 50.0 mL of carbon…

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Q: Complete the table below for calculating the molar mass of the ionic compound calcium iodide .…

A: To understand the heneralconcept , you should know some of the given points; •Molar mass is the mass…

Q: How many moles are in 48 g of Fe2O3? Use 56 g/mol as the molecular weight of Fe.

A: The moles is defined as the mass of substance devided by the molar mass of substance.This means…

Q: The molecular formula of allicin, the compound responsible for the characteristic smell of garlic,…

A: Allicin is C6H10OS2 Molar mass of C = 12.0107 g/mol  Molar mass of H = 1.00784 g/mol Molar mass of O…

Q: Explain the attached

A: It is given that 99.6 g of Na2SO3 is present and the sodium ions contained needs to be determined,…

Q: What is the simplest formula for a compound that contains 0.50 mol Na, 0.50 mol S, and 0.75 mol O?

A: No. of moles of Na, S and O are 0.5, 0.5 and 0.75 moles respectively.  Na = 0.5 mole  S = 0.5 mole…

Q: TCDD, also called dioxin (C 12H 4Cl 4O 2, molar mass 322.0 g/mol), is a potent poison. The average…

A: The dose of TCDD which is lethal for a individual can be calculated by multiplying the mass of the…

Q: (5) Complete the following table ( balance the reaction ) NaclO4 Nacl + 202 NaclO4 molar mass…

A: in Balanced chemical equation number of atoms of each species are equal on both reactent and…

Q: When a sample of cyclohexene is burned in oxygen, 4.822 g of CO2 and 1.650 g of H2O are obtained.…

A: The term combustion reactions refer to those type of chemical reaction in which a hydrocarbon reacts…

Q: Number of atoms in 0.2 g molecule Br3O3 is (molar mass of Br3O8 is 368 g mol-') (1) 0.22 NA (2) 2.2…

A: Given: Mass of Br3O8 = 0.2 g And molar mass of Br3O8 = 368 g/mol.

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.