What mass of sodium would be in a 124.56 g sample of sodium thiosulfate? Na2S2O3?

Q: How many grams of sodium are contained in 118.59 grams of Na2SO3 ?

A: 1.0 mole of Na2SO3 contains 2.0 moles of Na that means 126.0 grams of Na2SO3 contains 46.0 grams of…

Q: How many C4H10 molecules are contained in 9.213 g of this compound? How many hydrogen atoms?

A: Formula for calculation of number of molecules is:

Q: Calculate the formula units of K2Cr2O7 in 130 g of K2Cr2O7. How many O atoms are in this sample? If…

A: The representation in which the individual atoms of the compound are present in the lowest whole…

Q: How many atoms of hydrogen are in a sample of glucose (C6H12O6 molecular mass = 180.12 amu/molecule)…

A: A sample of glucose is considered. The number of atoms of hydrogen present in the sample can be…

Q: A Sample of pure Calcium fiuoride With a mass of 15.0g Contains 1.709 of calcium. How much calcium…

A: This question can be solved using proportion method as:

Q: How many atoms are in one molecule of H3 PO4 ?

A: The number atoms in one molecule of H3PO4 can be observed as,

Q: How many hydrogen atoms are in 790.58 grams of propane?

A: The moles of a substance is the mass of the substance which has equal quantity of basic units. The…

Q: In the formula for sodium phosphate (Na3PO4), how many moles of sodium are represented? How many…

A: In the formula for sodium phosphate (Na3PO4)   3 moles of sodium are represented 1 mole of…

Q: 15 g N2O has how many atoms of nitrogen?

A:

Q: ow many moles of H2O does 1.2 x 1024 molecules represent?

A: Given,  1.2 x 1024 molecules of H2O

Q: What is the molecular formula for a compound with the empirical formula CH and a formula mass of…

A: Empirical formula (EF) refers to the formula of a compound in which the elements are present in the…

Q: What is the mass, in grams, of a xenon hexafluoride sample containing 40.0 g of fluorine?

A: A xenon hexafluoride molecule consists of one atom of Xe and 6 atoms of fluorine. The formula of…

Q: Consider a 6.38 mol sample of C5H8. How many atoms of H would be in this sample?

A:

Q: What is the molar mass of N2O4? Na2SO4? C6H10O2?

A: 1. Molar mass is a quantitative method to calculate the total mass of all the atoms associated for…

Q: How many molecules of trilaurin are present in 3.5 moles of trilaurin?

A: Given: Moles of trilaurin = 3.5 mol

Q: An experiment requires that enough XeOF4 be used to yield 19.2 g of fluorine. How much XeOF4 must…

A:

Q: What is the formula mass of H2SO4?

A: The formula mass of H2SO4 is to be calculated.

Q: How many grams of chlorine are present in 45.0 g of CCl4?

A: Answer:- This question is answered by using the simple concept of calculation of mass of any element…

Q: mass

A:

Q: How many hydrogen atoms are in 27 molecules of diborane, B₂H₆?

A: The molecular formula of diborane is B2H6 We need to find number of hydrogen atoms present in 27…

Q: How many moles is found in a 94.6 gram sample of sodium acetate, NaC2H302?

A:

Q: How many fluorine atoms are present in 6.25 g of C2F4?

A: Moles of C2F4 is calculated as follows,

Q: Determine the number of atoms of C in 15.0 grams of C₆H₁₂O₆.

A: Given, mass of C₆H₁₂O₆ = 15.0 g Number of atoms of C in 15.0 grams of C₆H₁₂O₆ = ? Note: molar mass…

Q: A sample of iodine solid has a mass of 32.9 grams. How many I2 molecules are there in the sample?…

A: A mole is defined as one-gram formula or molecular weight of the compound. A mole is also defined as…

Q: How many moles of lithium phosphate (Li3PO4) are contained in 77.7 g of lithium phosphate?

A: We will use the formula: Number of moles = Given mass/Molar mass

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: How many moles of sodium (Na) are in 1.75×1024 Na1.75×1024 Na atoms?

A: Number of moles is calculated using formula,

Q: Consider a 2.938 mol sample of C4H8. How many atoms of H would be in this sample?

A: 1 mol of sample contains = 6.022 x 1023 particles  = avogadro number of particles (NA)  1 mole of…

Q: What is the total mass of hydrogen in each of the molecules?(a) CH4(b) CHCl3(c) C12H10O6(d)…

A: Mass of an atom of hydrogen is 1 g/mol.

Q: How many oxygen atoms are in 33 molecules of dinitrogen tetroxide, N₂O₄?

A: How many oxygen atoms are in 33 molecules of dinitrogen tetroxide, N₂O₄?

Q: How many Praseodymium atoms are present in 2.99 moles of Praseodymium ?

A: Given : 2.99 moles of Praseodymium ( Pr) Molecular weight of Pr = 140.91 grams

Q: A phosphorus compound that contains 34.00% phosphorus by mass has the formula X3P2. Identify the…

A: Mass of the compound that contains 34 g of phosphorus = 100 g Mass of the compound that contains 1 g…

Q: 2. How many ions of metal are in 5 molecules of NasPO4? How many atoms of metal?

A: Metals: Elements which can donate electrons easily are called as metals. Metals are good conductor…

Q: What mass of oxygen would be in a 124.56g sample of sodium thiosulfate Na2S2O3?

A: Given that:  Mass of Na2S2O3 = 124.56g  Molar mass of Na = 23g/mol Molar mass of S = 32g/mol Molar…

Q: What is the mass of 0.38 moles of Phosphorous?

A: Atomic Mass of Phosphorus=30.973762 g Mass of 1 mole = 30.973762 g  Mass of 0.38mole of Phosphorus =…

Q: A sample of trifluoroacetic acid, C,HF,02, contains 25.3 g of fluorine. Calculate the mass of the…

A: One molecule of C2HF3O2 contains 2 atoms of carbon, 1 atom of hydrogen, 3 atoms of fluorine and two…

Q: What is the percent of N in N2H4?

A: Molecular weight of N = 14 g/mol Molecular weight of  H = 1 g/mol Molar mass of N2H4 = 32 g/mol…

Q: How many grams of P are present in 2.92 grams of phosphorus triiodide ?

A: Molar mass of phosphorus triiodide (PI3) = 411.6872 g/mole Number of moles of phosphorus triiodide…

Q: What is the mass percent oxygen in the molecule NO2?

A: We Know that, Molar mass of NO2 = 46.0 g/mol Molar mass of O2 = 32.0 g/mol

Q: How many oxygen atoms are in 28 molecules of dinitrogen tetroxide, N₂O₄?

A: The answer to the following question can be calculated as -

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

A: This is mole concept reactions

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

A: A numerical problem based on mole concept that is to be accomplished.

Q: Consider a 2.12 g sample of C2H2. How many molecules are in this sample?

A: Given: Weight of C2H2=2.12 g The molar weight of the C2H2=26g/mol

Q: How many atoms are  in 11 molecules of P2O5

A: In a molecule of P2O5, there are two phosphorous (P) atoms and five oxygen (O) atoms. Thus, one…

Q: Find the number of carbon atoms in of 9.0 g of C3H10N4O2?

A: The compound given is C8H10N4O2. And mass of C8H10N4O2 = 9.0 g Molar mass of C8H10N4O2 = Atomic mass…

Q: How many grams of S are present in 2.10 grams of sulfur tetrafluoride ?

A:

Q: g) How many grams of K2C2O4, potassium oxalate, would contain 182 grams of pure potassium?

A: One mole of K2C2O4 has two moles of potassium.   The molar mass of K2C2O4 is 166.22 g/mol   And…

Q: B. How many grams of Al2(SO4)3 would contain 1.236 × 1020 atoms of sulfur? Mass of Al2(SO4)3 = grams

A:

Q: How many H atoms are there in 40 molecules of C6H6?

A: Given that, 40 molecules of C6H6

Q: B. How many number Na* ions in 3 g of Na3PO4?

A: Given, The mass of Na3PO4 = 3g Note: one mole (molar mass ) of any substance contains Avogadro…

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.