what is the percentage composition of oxygen of potassium sulfate,K2S04?

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A: The formula mass of a substance is the sum of the average atomic masses of each atom represented in…

Q: How many atoms there in 5 molecules of hydrogen peroxide, H2O2?

A: Given, 5 Molecules of H2O2  One mole of any substance contains 6.023*1023 atoms/ions/molecules.

Q: What is the molar mass of Sodium Sulfide. Na2S?

A: The molar mass of sodium sulfide has to be given.

Q: How many moles are there in 825 of Al(OH)3?

A: We have given   825 g  of  Al(OH)3  Molar mass of Al(OH)3 (M) = 27 + 3(16+1)            M = (27 +…

Q: What is the empirical formula and empirical formula mass for C7H14?

A: Given,      Molecular Formula: C7H14

Q: How many moles are in 187 grams of C,Hg(OH)2?

A: Number of moles = mass/molar mass

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A: The ionization of sodium oxide, Na2O is given.

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A:

Q: Determine the number of atoms of O 10.0 of CO2.

A: Since each molecule of CO2 has 1 atom of C and 2 atoms of O  Hence each molecule has total number of…

Q: How many MOLES of oxygen are present in 2.83×1022 molecules of dinitrogen monoxide ?

A: Given,  2.83×1022 molecules of dinitrogen monoxide.

Q: What is the number of nitrogen atoms in 5.360 g of ammonium sulfate?

A:

Q: What is the mass of oxygen in a 782.9g sample of TiO2?

A: Step : 1          What is the mass of oxygen in a 782.9g sample of TiO2?

Q: What is the mass in grams of 7.87 × 10¹⁵ molecules of CS₂?

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

Q: Determined the mass percentage of hydrogen in CH4 and C4H10?

A: Molar mass is defined as average mass of atoms present in the chemical formula. It is the sum of the…

Q: how many hydrogen atoms are there in 80.0 g of phosphoric acid?

A:

Q: Paris green is a highly toxic emerald green compound with the formula Cu(C2H3O2)2 x 3Cu(AsO2)2. What…

A: Given             The formula of the Paris green

Q: The molar mass of the potassium alum salt, KAl(SO4)2 ● 12 H2O is?

A:

Q: What are the empirical formula and empirical formula mass for C3H9O3?

A: Given molecule is                          C3H9O3

Q: What is the percentage by mass of sulfur in Iron (III) sulfide, Fe2S3

A: The mass percentage is the method of expressing the concentration of an element in a particular…

Q: How many moles are there in 45.0 grams of sulfuric acid, H2SO4?

A:

Q: The element X forms the chloride containing 75.0% Cl, by mass. What is element X?

A:

Q: What is the molar mass of zinc acetate, Na3P  ?

A:

Q: The recommended daily intake of salt, NaCl, is about 1 teaspoon = 2.3 g salt.  If the molar mass of…

A: Given  Mass of NaCl  =  2.3 gram  Molar mass of NaCl  = 58.44 gram/mole Number of atom of NaCl = ?

Q: what mass of aluminum oxide is required to prepare 27g (1 mol) of aluminum?

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Q: he molar mass of the hydrate, Co(NO,), · 6H,0.

A:

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: How many moles are in 2.3 x 1023 molecules of uranium (IV) fluoride?

A: Molecular  formula of Uranium(IV) fluoride is UF4. Now, according to Avogadro's theory   1 mol…

Q: Calculate the percentage of potassium, by mass,in K2PtCl6.

A: Mass percent of the solution is defined as the mass of solute divided by the mass of solution…

Q: What is the mass in grams of 5.36 × 10²⁵ molecules of I₂?

A: Given, number of molecules of I2 = 5.36 × 1025 molecules  mass of 5.36 × 1025 molecules of I2 = ?…

Q: How many atoms of hydrogen are in 230  g of hydrogen peroxide ( H2O2)?

A:

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 grams is a sample of 0.863 moles of zinc nitrate, Zn(NO3)2?

A: To convert from moles to mass, first, calculate the molar mass of Zn(NO3)2 and then use that to find…

Q: What is the percent by mass of phosphorus in PCI3?

A:

Q: How many moles of argon are in 53.0 g53.0 g of argon?

A: We know ; * Number of Moles  = Mass / molar mass    Mass of argon = 53 g Molar mass of argon = 39.9…

Q: What is the mass in grams of 6.61 × 10²⁵ molecules of Br₂?

A: Number of moles containing 6.023 × 1023 molecules of bromine = 1 mol Number of mole containing 1…

Q: Determine the molar mass of ammonium oxide, (NH4)2O.

A: Introduction: We need to calculate molar mass of (NH4)2O

Q: What is the molar mass of C12H1802 in g/mole?

A: Answer = Molar Mass: 194.2722 g/mol  Explanation - Calculations:Formula: c12h18o2…

Q: What is the number of moles for 2.44 x 1022 NaCl formula units?

A:

Q: What is the percentage composition of CaCl2

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Q: What is the molar mass of aluminum sulfate, Al2(SO4)3?

A: Given :- molecula formula of aluminium sulfate is Al2(SO4)3  To calculate :- molar mass

Q: 8.6 x 10²³ formula units of NaCl is equal to how many moles H?

A: Applying mole concept and avogadro number.

Q: What is the percent by mass of nitrogen in NH3?

A: %mass = (mass of solute ÷  mass of solution ) × 100

Q: What is the mass percentage of O in C₃H₈O₂? Provide an answer to two decimal places.

A: We have to find the mass % of O in C₃H₈O₂ As,  Atomic mass of C = 12 g mol-1 Atomic mass of H = 1 g…

Q: What is the molar mass of nitroglycerin, C3HS(NO3)3?

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Q: How many grams of calcium nitrate are present in 55.2 moles of Ca(NO3)2?

A:

Q: What is the molar mass of ammonium phosphate, whose chemical formula is (NH4)3PO4?

A: Molar mass of any compound = atomic mass of all the atoms present in the chemical formula  Since in…

Q: A 69.5 g69.5 g sample of the compound X3O4X3O4 contains 19.2 g19.2 g of oxygen atoms. What is the…

A: First Calculate mas percent of oxygen in compound   Total mass of oxygen in sample is 64g  Then need…

Q: What is the mass in grams of 1.59 moles of aluminum oxide Al,O3 ?

A: Q - What is the mass in grams of 1.59 moles of aluminum oxide Al2O3

Q: The formula of ytterbium(III) oxide is Yb₂O₃. What is the percent by mass of oxygen in…

A: Mass percent represents the composition of an element in the given compound, which is calculated…