2.050 g of an unknown sample contains H, S, and O. If the compound contains 0.0500 g H and 0.800 g of S, what are the percentages of H and S in this sample?

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A: Given data:  The solubility of NaBr = 0.9432 g/mL Mass of NaBr = 78 g Volume = 75 mL

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Q: time, s [NOB|], M 0.5 10 0.286 20 0.2 30 0.154

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A: A 2.57 g sample of fat contains 1.21mg of PCB.  

Q: Why do molecules exist independently?

A: Given question is : Why do molecules exist independently = ?

Q: 106

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Q: ionic

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A: X) all carbons are sp2 hybridized This statement is Correct

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Q: Draw the major product of this reaction. Ignore inorganic byproducts.

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Q: What mass of KOH is necessary to prepare 830.0 ml of a solution having a pH = 11.49? Mass = g

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A: Given octane = 9.47 g  Molar mass of octane = 114.23 g/mol Molar mass of O2 = 32 g/mol Oxygen = ? g

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A: Oxidation means loss of electrons and reduction means gain of electrons.

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Q: Given is the reaction:                       CH4(g) + 2O2 (g) → CO2(g) + 2H2O (g) ΔG°f CH4   = -50...

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Q: What is the atom ratio between Cand H in C2H5OH? O 2/6 O 2/5 O 1/5 O 2/1 Save for Later

A: Atomic ratio is the ratio of different atoms present in a compound. 

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".