A sample is found to contain 63.65% nitrogen and 36.35% oxygen. What is its chemical formula? O N20 O NO2 O N2O2 O N30

Q: How many moles of Ca(OH)2 are present in 370.47 grams of Ca(OH)2?  2  3  5  6

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Q: Assume you had 25.0 grams of C​3O​2.​ Determine how many grams of carbon and how many grams of…

A: Given  mass of sample , C3O2 = 25.0 grams    Required data  molar mass of sample, C3O2 = 68.03…

Q: What is the mass of 4.50 x 1022 Cu atoms? Multiple Choice O 4.75 g O 63.55 amu O 63.55 g O 7.47 x…

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Q: Formaldehyde, CH2O, is a toxic gas with a pungent odour. It is used in large quantities for the…

A: CH2O It is made o C, H and O

Q: The mass percent of CO3 in ca(CO3)2 ( atomic mass C= 12, O = 16, Ca = 40) is O 60% O 77.77%) O 50% O…

A: Mass percent can be calculated by the formula given below as; Mass percent=Mass of the…

Q: Calculate the mass of 3.62 × 1 0 24 molecules of glucose( C 6 H 12 O 6 ).

A: To calculate the molar mass of any molecule. We must know about the molar masses of the individual…

Q: Calculate the total number of N atoms in 23.8 g N2O5. O 2.65 x 1023 total N atoms O 9.31 x1023 total…

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Q: How many moles of SO2 contain 8.02 × 10^21 atoms of oxygen?

A: 1 mole of a substance contains Avogadro's number of atoms. (6.022×1023 atoms ).

Q: An element consists of 1.40% of an isotope with mass 203.973 u, 24.10% of an isotope with mass…

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Q: The density of solid Cr is 7.15 g/cm3. How many atoms are present per cubic centemeter of Cr?

A: Mass = Volume x density Number of moles = Mass/molar mass Number of molecules = 6.0224 x 1023 x…

Q: How many moles of hydrogen (H) is present in 9.8g of water. atomic weight  H= 1 O= 16

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Q: If you start with 675.2 g of S8 and 975.2 g of O2, what mass of SO3 will be produced? S8 +12O2 =…

A: Given :  S8 +12O2 = 8SO3 mass of S8 = 675.2 g  mass of O2 = 975.2 g  To be calculated :-  mass of…

Q: How many atoms of all kinds are contained in 42.1 grams of calcium carbide (Ca2C)? Ans: 8.25 x 10^23…

A: Given :                Mass of Ca2C = 42.1 gm                 Molar mass of Ca2C = 92 gm mol-1…

Q: Calculate the mass percentage of carbon in a mixture that contains 244 grams of potassium carbonate…

A: Molar mass of K2CO3 = 138 g/mol Molar mass of citric acid = 192 g/mol

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A: The balanced chemical equation for this reaction is: NH3 + Br2 + H2O → NH4Br + HOBrNH3 is…

Q: How much would 2.4 x 1024 molecules of N2O5 weigh?

A: Moles=2.4*10^24/(6.022*10^23) = 4

Q: How many moles of oxygen atoms are present in 5.148 kg of calcium oxalate? O 6.594 x 102 O 1.608 x…

A: A) answer Amount of calcium oxalate- 5.148 kg = 5148 gram Molar mass of CaC2O4 = 40 + 12 ×2 + 64…

Q: An experiment requires that enough C6H12O6 be used to yield 17.2g of oxygen . How much C6H12O6 must…

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Q: How many molecules of water occur per formula unit of MgSO4. Write the complete formula of the…

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Q: What mass of carbon dioxide. CO2. contains the same number of molecules as 3.00 g of…

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Q: Calculate the number of grams of lithium in 5.44 x 10^21 atoms of lithium.

A: Given -> Number of atoms of lithium =5.44 × 10^21 atoms

Q: How many grams will 8.53 x 1023 molecules of C6H12O6 (180.16 g/mol) weigh?

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Q: 22 Calculate the mass of 3.0 × 1044 atoms of sulfur. O 1.6 g O 16 g O 160 g O 0.16 g

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Q: Ammonium perchlorate (NH4CIO4) is the solid rocket fuel that was used by the U.S. Space Shuttle and…

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Q: what is the molecular formula for a substance that in 1 mole of sample contains 1 mole of S 24.1 x…

A: Given, 1 mole of a sample contains: 1 mole of S, 24.1 x 1023 atoms of F and 71.0 g of Cl.To find the…

Q: A 3.000g sample of lead (207.2 g/mol) was completely reacted with excess oxygen (16 g/mol) in a…

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Q: What is the total number of oxygen atoms on the left-hand side of this chemical equation? 2 Ca₂…

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Q: How many moles of sodium hydroxide are there in 1.00 kg of sodium hydroxide (Given Na=22.99 g/mol;…

A: Given mass of sodium hydroxide = 1kg = 1000g

Q: A 30.141 mg sample of a chemical known to contain only carbon, hydrogen, sulfur, and oxygen is put…

A: To determine the empirical formula , we would determine the moles of Carbon, Hydrogen , sulfur and…

Q: 4) Ozone, O3, is a product in automobile exhaust by the equation NO2(g) + O2(g) → NO(g) + O3(9).…

A: Since you have posted multiple questions, we are entitled to answer the first only. Please repost…

Q: Calculate the mass, in grams, of sample. 2.82x10^22 helium atoms

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Q: What mass of oxygen would be in a 124.56 g sample of sodium thiosulfate Na2S2O3? 74.85 g 18.91 g…

A: The mass of sodium thiosulfate = 124.56 gThe mass of oxygen present =?

Q: A sample of trifluoroacetic acid, C2HF3O2, contains 33.733.7 g of oxygen. Calculate the mass of the…

A: Given, mass of oxygen = 33.7 g Now, one mole of C2HF3O2 contains two moles of oxygen.

Q: A certain organic compound has the formula C9H11O3. A sample of this compound weighs 3.4 grams.…

A: The formula of the organic compound is C9H11O3. The molecular mass of the organic compound=9 x 12 +…

Q: What is the mass of 4.63 x 1012 atoms of Fe? O 8.96 x 10-10 g O 4.29 x 10-10 g O 2.73x 10-10g O 1.62…

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Q: If 20 mL of 0.5 M Pb(NO3)2 solution is added into 40 mL 0.5 M KI solution, how many grams of Pbl2…

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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".