31. How many grams of each of the following substances will contain half as many atoms as 20.00 of O? (a) H • (b) N (c) Li • (d) Ni ●

Q: A student heated a 3.32-g sample of a hydrate and recovered 2.02 g of an anhydrous compound. (b)…

A: Given : Mass of anhydrous MgC2O4 recovered = 2.02 g

Q: (a) Calculate the molar mass of ammonium nitrate, NH4NO3. (b) What is the mass percent of nitrogen…

A: (a) Molar mass of a molecule = sum of atomic masses of all the constituent elements      Molar mass…

Q: What number of atoms of nitrogen are present in 4.50 g of each of the following? (a) calcium nitrate…

A:

Q: (a) cyclobutane,     Molar Mass = (b) cobalt(III) chromate, Co2(CrO4)3   Molar Mass =

A:

Q: Write the balanced chemical equation for the following and identify the type of reaction in each…

A: (a) Potassium bromide(s) + Barium iodide(aq) = potassium iodide(aq)+Barium bromide (s). The balanced…

Q: (b) н— О: CHa H H.

A: Aldol condensation reaction :-            This reaction is carried out in the presence of 50%…

Q: An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by mass…

A: For calculation of Molecular formula, first of all we calculate the % of each atom , empirical…

Q: (a) How many moles of ammonium ions are in 0.414 g of ammonium carbonate? mol (b) What is the…

A:

Q: (a) What is the chemical formula of eugenol, the main contri butor to the aroma of cloves? (b)…

A: a) We have to find chemical formula of eugenol, the main contributor to the aroma of cloves.…

Q: (b) The number of moles of potassium that contains 8.93 × 104 atoms. x 10 mol

A: Given  Atoms of potassium = 8.93 x 1025  To find = number of moles of potassium

Q: . A sample of 1.000 g of a compound containing carbon and hydrogen reacts with oxygen at elevated…

A: Since we answer only 3 sub-parts, we'll answer the first three. Please resubmit the question by…

Q: Determine the number of moles in: (a) 100 grams of magnesium hydroxide (Mg=24, O= 16, H=1) (b)1.75 x…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: 3.) Tetraphosphorus decaoxide reacts with water to form phosphoric acid, a major industrial acid. In…

A:

Q: (a) What is the mass, in grams, of 1.223 mol of iron(III)sulfate?(b) How many moles of ammonium ions…

A: (a) Given, Moles of iron (III) sulfate is 1.223 mol Molar mass of iron (III) sulfate is 399.88 g/mol…

Q: Which of the following reactions can be described as an atom combination reaction? (a) Ca(g) + S(g)…

A: (a) Ca(g) + S(g) + 4 O(g) → CaSO4(s) (b) C(graphite) + 2 H2(g) → CH4(g)   (e) K(s) + Mn(s) + 2 O2(g)…

Q: a) What is the mass, in grams, of 2.50 x 10-3 mol ofammonium phosphate?(b) How many moles of…

A: The number of moles of ammonium phosphate ((NH4)3PO4) IS 2.50×10-3 mol To calculate the mass of a…

Q: (a) How many moles of ammonium ions are in 0.393 g of ammonium carbonate? mol (b) What is the mass,…

A: Formulae used : Moles = given mass ÷ molar mass A)Given :Mass of ammonium carbonate= 0.393 g Molar…

Q: Calculate each of the following quantities:(a) Total number of ions in 38.1 g of SrF₂(b) Mass in…

A: The number of moles is equal to the ratio of mass to the molar mass of the substance. The total…

Q: Calculate the following: (a) mass in 1.73 mol of CaH 2 (b) moles of mg (NO3) 2 in 3.25 g of…

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Q: In a lab experiment, 7.97 g of phosphorus reacts with bromine to form 69.65 g of phosphorus…

A: When mole fraction of element is multiply by 100 we obtained percentage by mass .

Q: (c) An organic compound consists of carbon, hydrogen and sulfur only. The percentage of carbon by…

A: We have to find empirical formula for given compound

Q: (a) What is the mass, in grams, of 4.62  1023 molecules of aspirin, C9H8O4?

A:

Q: 1.Ibuprofen is a compound used in painkillers. When a 2.174 g sample is burned in an excess of…

A:

Q: A compound is composed of carbon, hydrogen, nitrogen and oxygen. When a 1.500-g sample of the…

A: Given- mass of sample = 1.500 g combustion yields - CO2 = 1.476 g H2O = 0.605 g N2 = 0.313 g To find…

Q: 3) An organic compound contains only C, H, and O. Complete combustion of a 3.185 g sample in an…

A:

Q: e mass, in grams,

A:

Q: (a) How many moles of ammonium ions are in 0.735 g of ammonium carbonate? mol (b) What is the mass,…

A: Dear student, As you have asked multiple question but according to guidelines we will solve first…

Q: Answer true or false. (b) Avogadro’s number, to three significant figures, is 6.02 x 1023 formula…

A: Given statements -  (b) Avogadro’s number, to three significant figures, is 6.02 x 1023 formula…

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".