A sample contains 10.0 g C, 2.5 g H, and 5.0 g of O. Calculate the mass percent composition of oxygen (%O) in the sample.

Q: Consider a 25.0 g sample of Ca(NO3)2. Determine the following: mass (in g) of O number of NO3− ions…

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Q: How many grams of Cl, are needed to form 82.4 g of AlCl, ? 2 Al(s) + 3 Cl, (g) 2 AICI, (s)

A: two moles of Al reacts with  3moles of chlorine gas forms 2 moles of AlCl3 Calculation of no of…

Q: 3.120 A mixture of NaBr and Na2SO4 contains 29.96 percentNa by mass. Calculate the percent by mass…

A: Solution- Molar masses of alll which we required-Na-23.00 g/molBr- 32.07 g/molS- 16.00…

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. Molar mass of an Element = Atomic mass of the Element Molar mass of a Compound = Molecular mass…

A: Given: Molar mass of C = 12.01 g/mol Molar mass of O = 16.00 g/mol Molar mass of Pt = 195.08 g/mol…

Q: 27.) What elemental analysis of a substance shows that it consists of 52.2%C, 34.7%O anf 13%H by…

A: It is a chemical formula that shows the simplest ratio of elements present in compound rather that…

Q: A student, Ken, is given a mixture containing two nitrate compounds. The mixture includes NaNO3 and…

A: Mixture consists of two nitrate compounds NaNO3 and Ca(NO3)2. Mass Percentage of NO3 in the mixture…

Q: Iodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous solution…

A: Number of moles of I2 is determined as follows, Molar mass of NaI is 253.8 g/mol 2 moles of NaI…

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

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Q: A 1.912g sample of calcium chloride is decomposed into its constituent elements and found to contain…

A: The mass percent of elements is calculated using equation (1) where m is mass of element and M is…

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: Calculate the percentage composition for PCI3. Mass percentage of phosphorus = Mass percentage of…

A: Formula : PCl5 Molar mass of P = 31 g/mol Molar mass of Cl = 35.5g/mol  Molar mass of PCl5 = P +…

Q: 8. Calculate the number of moles in a sample containing 1.85 x 1034 molecules of water.

A: Given that: Molecule of water = 1.85 × 1034 molecules Number of moles = ?

Q: 250(g) + 02 (g) + HCI (g) NH3(g) MgCO3 250 (g) NH,CI (s) + CO2(g) Mgo (s) +

A: Entropy denotes by a symbol 's' . Entropy of a universe increasses spontaneously.   Second law of…

Q: If 2.332 g of a sample containing a mixture of CuO and CuCO3 are heated, the final weight of the…

A: CuCO3 on heating decomposes to form CuO and CO2 CuCO3 (s) →heat CuO (s) + CO2 (g) 123.55 g…

Q: What is the mass of 2.2 x 10 ° CO 2 molecules? O a. 1.0 x 10-12 g O b.1.6 x 10-13 g O. 12x 106 g O…

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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: How many moles of potassium cyanide, KCN, are present in a sample containing 67.1 grams of the…

A: Given, Mass of potassium cyanide (KCN) = 67.1 g Moles of potassium cyanide (KCN) = ? Note:  Molar…

Q: Total Mass of Moles of Molecules Atoms in Sample Sample in Sample Sample 4.24 g CH6 0.224 mol H,O…

A: Multiple question given

Q: Use your average AA concentration to calculate the mass percent of acetic acid in vinegar.

A: Mass percent = Mass of soluteMass of sample×100 Here solute is acetic acid and the sample is…

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

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Q: Calculate the mass percentage of each element in vanadium (III) acetate.

A: Given :- name of compound = vanadium (III) acetate  To calculate :- mass percentage of each element

Q: calculate the mass percentage of each element in 2-propanol

A: The question is based on the mass percentage. we have been given 2-propanol molecule. We have to…

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: 1.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

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Q: What is the mass of 5.45 x 10 -3 mol of glucose C 6 H 12 O 6? O a. 981 g b.0.981 g O c. 0.158 g O…

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Q: 4. What mass of NH3 is produced from 12 grams of H2?

A: Here we have to determine the mass of NH3 produced when 12 grams of H2 reacts with excess amount of…

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 What is the maximum mass of ammonia that can be produced from a mixture of 1.00 x 10 g N2 and 5.60…

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Q: nitrogen atoms in 38.1 g of TNT, C,H;N3O6

A: Since you have posted a  question with sub-parts , we are entitled to answer the first three…

Q: What is the molar mass of calcnum chloride hexahydrate! a 75.53 g'mol, b.111.0 gmol c 1170 gmol d.…

A: The answer to the following Question is:

Q: A student, Ken, is given a mixture containing two nitrate compounds. The mixture includes NaNO3 and…

A: Mass Percentage of NO3 in the mixture is 73.76%. it implies that 100 g of mixture contains 73.76 g…

Q: Calculate the mass (in g) of each sample.a. 4.5 * 1025 O3 moleculesb. 9.85 * 1019 CCl2F2 moleculesc.…

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Q: An acid, HEl, is formed from a hypothetical element, El, and a subsequent aqueous solution is…

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Q: How many grams of oxygen does it contain? What is the percentage by mass of nitrogen in the…

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Q: What is the molar mass of potassium nitrate (KNO3)? O 63.0 g/mol O 25.6 g/mol O 101.1 g/mol

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Q: Magnesium hydroxide, Mg(OH)2, is a common antacid. Calculate the percent composition by mass of Mg…

A: molar mass of Mg(OH)2  = 58.32 g mol-1 molar mass of Mg = 24.30 g mol-1

Q: Determine the number of atoms present in 20.0 g samples of each of the following elements? a. Be…

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Q: What is the mass percentage of C in CH;CH,OH? 52.144 % 3.

A: The given question is based on the knowledge of the determination of the empirical formula of the…

Q: A 0.45g sample of aspirin is decomposed into its constituent elements and found to contain 0.27g C,…

A: Given: Mass of aspirin sample = 0.45 g. Mass of C produced = 0.27 g. Mass of H produced = 0.020 g…

Q: Arrange the quantities from largest to smallest in terms of mass: = 1.35 moles of Cu = 2.51 x 1024…

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Q: An acid, HEl, is formed from a hypothetical element, El, and a subsequent aqueous solution is…

A: The number of moles of compound is given by the expression: Number of moles=Given mass of…

Q: A 1.912-gg sample of calcium chloride is decomposed into its constituent elements and found to…

A:

Q: What is the maximum mass of ammonia that can be produced from a mixture of 1.40 x 10' g N, and 4.60…

A: Given data, According to the stoichiometry, One mole ( 28.014 g ) of nitrogen will react with three…

Q: what is the mass percentage of Ag in a piece of metal with 50.4 g of Ag in a 125 g sample?

A: Given, mass of Ag = 50.4 g  mass of sample = 125 g mass percentage of Ag = ? %

Q: Q6 - Calculate the formula weight of the following molecules to three significant figures Q7…

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Q: What is the molar mass of Mg3(PO4)2 ? O 150.3 g/mole O 71.28 g/mole O 214.3 g/mole MacBook A

A: The answer is given as follows

Q: Calculate the mass of Cl in 105 g of CCI3F (molar mass = 137.37 g/mol) Select one: O a. 315 g Cl O…

A: Given : Mass of CCl3F = 105 g Molar mass of CCl3F = 137.37 g/mol.

Q: Calculate the percentage by mass of magnesium in magnesium sulphate (MGSO4). 24 +32 +16 ×4 = 120 .

A: Introduction The percentage by mass of any element that is available in any particular compound can…

Q: How many P atoms are present and what is their combined mass per mole of Ca3(PO4)2? Mass Ca = 120.24…

A: Given: Mass of Ca= 120.24 g Standard data: The molar mass of Ca3(PO4)2 =310.18 g/mol The molar…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".