A compound has the composition given in the table below. Molar masses of the elements are also provided. Determine the empirical formula. element Cr C 12.7 12.0 Mass % 36.6 50.7 % Molar mass 52.0 16.0 g/mol

Q: Mass Number of Number of Molecules or Number of Atoms Substance (g) or lons Moles Formula Units…

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: What is the mass (in grams) of 2.40 x 1024 CS2 (tear gas) molecules? [Note: Molar Masses (g/mole): C…

A: Atomic mass of C = 12 g mol-1 Atomic mass of S = 32.1 g mol-1 Number of CS2 molecules = 2.40 × 1024

Q: 1. A term used to describe the amount of substance. 2. The relationship between the mass or quantity…

A: In chemistry and every other scientific or engineering subject a long term is given a specific name…

Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

A: Given :-  Percent composition of Zn = 23.4 %  Percent composition of As = 53.7%  Percent composition…

Q: A sample of ammonium phosphite, (NH4)3PO3, contains 0.162 mol of nitrogen atoms. The number of moles…

A: Given , ammonium phosphite  (NH4)3PO3

Q: Tin (Sn) exists in Earths crust as SnO2. Calculate the percent composition by mass of O and Sn in…

A: To find the percent composition by mass of O and Sn in SnO2, first we need to find how much amount O…

Q: Calculating Molar Masses of Compounds Just add together the molar masses of all the elements in the…

A:

Q: A mixture of gases has the following composition by mole: mol% | MW (g/mol) 02: 22 32 CO: 8 28 CO2:…

A: Let the total composition be of 100 moles So we have 22 moles of O2                     8 moles of…

Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

A: The composition data given is,

Q: 3) The molar mass of Cu (CO3)2.3H20is: 237.562 g/mol a) b) 183.53 g/mol 201.53 g/mol 160.88 g/mol c)…

A:

Q: 30. What is the molar mass of (NH4)2SO4? 113.19 g/mol 141.39 g/mol 114.05 g/mol 124.21 g/mol 132.17…

A: Molar mass :- The molar mass of any substance is equal to the sum of the atomic mass of all the…

Q: Write the chemical formula for each compound, and then calculate the amount in moles in each sample.…

A:

Q: 1. NANOS Element # atoms Atomic mass (g/mol) Total (g/mol) Na Total Molar mass 2. LIAIH, Element #…

A:

Q: 17. What is the percent composition by mass of nitrogen in-a compound: NANO3(MMNANO3 = 85.0 g/mol)…

A:

Q: Calculate the molar mass of Iron(III) chloride hexahydrate: FeCl3• 6H20. O 162.29 g/mol O 180.29…

A: Given  Molar mass of EDTA disodium salt dihydrate = 372.24 g/mole Molar Mass of FeCl3.6H2O Molar…

Q: Determine the number of sulfur present in each of the the following quantities. a. 3.01 x 10^23 S2O…

A: a) Given : Number of S2O molecules = 3.01 X 1023 molecules. Since each molecule of S2O contains 2 S…

Q: What number do you get if youdivide the mass of 1 mol of waterby the mass of 1 molecule of water?

A: 1 mole of atoms refer to the total number of protons multiplied by the atomic mass unit and avogadro…

Q: Determine the chemical formula of each compound and then use it to calculate the mass percent…

A: a.

Q: The moler mass of sulfur tetrafluoride is A. 54.10 g\mol B. 358.60 g/mol C. 108.07 g/mol D.…

A:

Q: A compound consisting of only sulfur and oxygen is 50.0% oxygen by weight. Determine the empirical…

A:

Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

A: (1) Empirical formula is the representation of different elements in a given compound as a  Normal…

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: What is the mass of magnesium (24.305 g/mol) present in 0.3621 g Mg3N2 (100.949 g/mol)? 0.1744 g…

A: Given that:  Mass of Mg3N2 = 0.3621g  Molar mass of Mg3N2 = 100.949 g/mol Moles of Mg3N2 = given…

Q: a. Calculate the molar mass of P205. Molar masS = g/mol %3D b. Calculate the molar mass of Caz…

A:

Q: Calculate the mass (in g) of each sample.a. 5.94 * 1020 SO3 moleculesb. 2.8 * 1022 H2O moleculesc. 1…

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: Ca(s) + 2HCI(ag)--> CaClalaq) + H2(g) What is the mass of CaCl, that can be produced from 0.621 g of…

A:

Q: The molecular formula for paracetamol is C3H,NO2. How many moles of C atoms are present in a 10.0 g…

A: Molecular formula of paracetamol is C8H9NO2 Molecular weight of paracetamol is  =  8 carbon atom = 8…

Q: MgCl₂(aq) + Na₃PO₄(aq) → Mg₃(PO₄)₂(s) + NaCl(aq) calculate the moles of MgCl₂ that will be required…

A:

Q: A compound has the composition given in the table below. Molar masses of the elements are also…

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

Q: A. Calculate the molar mass of each substance. 1. NaCl 2. O2 3. O 4. CeH1206 5. (NH4)3PO4 6. Ag

A:

Q: An unknown compound is said to have 67.6% mercury, 10.8% sulfur and 21.6% oxygen. Calculate its…

A: In chemistry, the empirical formula of a chemical compound is the simplest positive integer ratio of…

Q: A certain chemical substance has the following percent composition by mass. Element Mass Percent…

A: Supose we have 100 g of given compound   therefore mass of C = 43.45 g  mass of H = 8.02 g  mass of…

Q: In the laboratory, a student weighs out 0.0852 g of cobalt on balance. How many atoms of cobalt…

A: Molar mass of an element represents the mass of one mole of the element.

Q: A pure sample of an unknown molecule has a mass of 35.51 g and contains 0.2000 moles. What is the…

A: 177.55 g/mol

Q: Determine the empirical formula of a compound whose composition is 50.1% S and 49.9% O.

A: Determination of Empirical Formula

Q: What mass of XeCl4 contains 11.245 x 1022 molecules of XECI4? Molecular mass (g/mol) XeCl4: 273.09…

A: We determined mass of XeCl4 by using avogadro's number. NA = 6.022×1023 molecules per mole .

Q: Calculate the molar mass of ammonium phosphate, (NH4)3PO4. 149.0 g/mol 113.0 g/mol 242.0 g/mol 121.0…

A: To calculate the formula mass of any compound, we can multiply the relative atomic masses (or atomic…

Q: Most fertilizers consist of nitrogen-containing compounds such as NH3, CO(NH2)2, NH4NO3, and…

A: The compounds which are used as fertilizers are given as NH3, CO(NH2)2, NH4NO3, and (NH4)2SO4.

Q: What is the molar mass of the substance shown below? NaHCO3 O 75.03 g/mol 83.00 g/mol 84.01 g/mol

A: Molar mass : It is defined as the mass of 1 mol of the substance, is equal to the mass of 6.022×1023…

Q: Titanium tetrachloride, TiCl4 , is prepared by the reaction below.…

A: Given, Mass of TiO2 = 35g. Mass of Cl2 = 38g. Mass of C = 11g. The balanced reaction for the…

Q: a. Calculate the molar mass of Al2 O3. Molar mass = g/mol %3D b. Calculate the molar mass of Na3…

A: Answer: Molar mass of a compound is the sum of the gram atomic masses of all the atoms present in…

Q: What is the empirical formula of the compound?

A: The empirical formula is defined as the lowest whole number ratio of  elements present in a compound

Q: The molar mass of a sulfur molecule (Sg) is a 32.05 g/mol b 140.0 g/mol c 256.5 g/mol d None of the…

A:

Q: 24) Calculate the molar mass of the following compound: ammonia, NH3 A) 15.02 g/mol B) 17.03 g/mol…

A: 24) molar mass of nitrogen = 14.0067 g/mol molar mass of hydrogen = 1.00784 g/mol

Q: Starting with the following equation, MgCl₂(aq) + Na₃PO₄(aq) → Mg₃(PO₄)₂(s) + NaCl(aq) calculate the…

A:

Q: Click in the answer box to activate the palette. Determine the empirical formula of a compound…

A:

Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

A:

Q: A mineral sample is obtained from a region of the country that has high arsenic contamination. An…

A:

Q: Mass Number of Number of Molecules or Number of Atoms Substance (g) Moles Formula Units or lons…

A: