27. Calculate the percent composition by mass of these compounds: (d) SiCl4 (e) Al2(SO4)3 (f) AgNO3 (a) NaBr (b) KHCO3 (c) FeCl3

Q: How many oxygen atoms are thre in 6.00g of sodium dichromate, Na2Cr2O7? The molar mass of sodium…

A: Given,  Mass of sodium dichromate, Na2Cr2O7 = 6 g  Molar mass of sodium dichromate, Na2Cr2O7 =…

Q: (a) How many moles of ammonium ions are in 0.735 g of ammonium carbonate? 0.05130 X mol

A: a) Chemical formula of ammonium carbonate = (NH4)2CO3 Given, mass of ammonium carbonate, (NH4)2CO3 =…

Q: One of the hydrates of Na2CO3 is sodium carbonate decahydrate A 55.6 gram sample of Na2CO3  10 H2O…

A: b b

Q: Calculate the molar mass of each: (a) Pd(NO3)4 (b) C6H10O

A: Molar Mass: The summation of molecular weight of each element present in the compound gives molar…

Q: anesthetic used to treat a range of conditions such as sunburn, bites, stings and a range of rashes.…

A: Molecular form of Benzocaine is C9H11NO2  Avogadro’s number 1 mole = 6.022×1023 particles

Q: Calculate the molar mass (in grams/mol) of     a) osmium metal, the densest naturally occurring…

A: Molar mass of a substance is equal to the sum of masses of all its elements. Atomic mass of C is 12…

Q: If 5.00 moles of MgO were reacted with excess moles of P,Ojo, what mass of Mg(PO4)2 would be…

A: Number of moles of MgO = 5.0 moles

Q: Q5) Determine the empirical formula of a compound that has (by mass) 85.7% carbon, 14.28% hydrogen.…

A: By mole ratio method we can calculate the mole of Cl2  1 mole of SiCl4 produce by 2 mole of Cl2

Q: N2(g) + 3H2(g) —> 2NH3(g) What mass in grams of Ammonia (NH3) is produced from 25 moles of Hydrogen…

A: Given reaction is  N2(g) + 3H2(g) -------> 2NH3(g) Moles of hydrogen = 25 moles Molar mass of…

Q: Balance the following skeletal chemical equations. (Use the lowest possible coefficients.)(a)  Al(s)…

A: Balanced the following reactions-

Q: Calculate the molar mass of each of the following:(a) SnO(b) BaF₂(c) Al₂(SO₄)₃(d) MnCl₂

A: a) The compound given is SnO. In the compound, there are 1 Sn and 1 O atoms. Hence the molar mass of…

Q: 0. What are the empirical formulas of the compounds with the following compositions? (a) 2.1 percent…

A: Note: As per our guidelines, we are supposed to answer only one question when multiple questions are…

Q: Calculate the number of moles of: (a) s2- ions in 6.56 mol of NazS (b) Mg²+ ions in 8.320 mol of Mg3…

A: (a) Given , compound is Na2S moles of Na2S is =6.56 mol

Q: Calculate the molar mass of each of the following: (a) SnO (b) BaF2 (c) Al2(SO4)3 (d) MnCl2

A: Molar mass literally means mass of one mol of a substance in grams. One mol refers to that amount…

Q: A compound has the composition of 26.28% Carbon, 5.15% Hydrogen, 10.22% Nitrogen, and 58.35% Oxygen,…

A: Since percent composition is given, let's consider 100 g of the compound. For 100 g of the compound,…

Q: what is the symbol (the fancy m) before mol in question 3.35 B. and how do i solve this question.

A: The symbol before mole in given question is micro. The mass for 0.6 micromole of C4H10 is determined…

Q: Calculate the molar mass of each of the following:(a) Sr(OH)₂ (b) N₂O₃ (c) NaClO₃ (d) Cr₂O₃

A: The Molar Mass of the given compounds can be calculated as follows -

Q: Calculate each of the following quantities. (a) mass in kilograms of 4.8  1020 molecules of NO2…

A:

Q: Ferrocene has the formula Fe(C5H5)2 (a)Chemical amount of ferrocene in 100g of ferrocene (b)Number…

A: This can be solved by using the Molarity and Avogadro's number concept.

Q: If you weigh out 0.133 g of CuSO4\cdot⋅5H2O, how many moles of Cu2+ is that?

A: Given :-  Amount of CuSO4.5H2O = 0.133 g  To be calculated :-  Number of moles of Cu2+

Q: If you have 10.51 grams of palladium (IV) nitrate, how many moles is this? (b) If you have 7.12…

A:

Q: 3. What is the mass in grams of 0.0435 moles of alcohol (C,H;OH)?

A: Molar mass = 2 • ( molar atomic mass C ) + 6 • ( molar atomic mass of H ) + ( molar atomic mass of O…

Q: Give the empirical formula of each of the following compounds if a sample contains the following…

A:

Q: Imagine that you perform a combination reaction between 60.0 g of sodium metal (Na) with 10.0 g of…

A: chemical equation :-  2Na (s) + 3N2 (g) ---> 2NaN3 (s)  60.0 g of Na and  10.0 g of N2  moles N2…

Q: (a) How many moles of ammonium ions are in 0.459 g of ammonium carbonate?  _______mol(b) What is the…

A: The chemical formula of a compound represents 1mole of molecules present in it. Molar mass of a…

Q: (d) number of moles of NH4CI in 86.6 g of CdS

A: As you have asked question 5 d, we will solve the same for you. (d) Number of moles of NH4Cl in 86.6…

Q: empirical formula?

A:

Q: 3.9 Calculate the molar mass of each of the following: (a) (NH4)3PO4 (b) CH,Cl2 (c) CuSO,-5H2O (d)…

A: The molar mass of the compound can be determined by the sum of the atomic masses of each atom…

Q: 31. How many grams of each of the following substances will contain half as many atoms as 20.00 of…

A: Given: Mass of O = 20.00 g Known: Molar mass of H = 1 g/mol Molar mass of N = 14 g/mol Molar mass of…

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.