. A sample of 1.000 g of a compound containing carbon and hydrogen reacts with oxygen at elevated temperature to yield 0.692 g H2O and 3.381 g CO2.(a) Calculate the masses of C and H in the sample.(b) Does the compound contain any other elements?(c) What are the mass percentages of C and H in thecompound?(d) What is the empirical formula of the compound?

Q: What is the mass (in ka) of 6.89 x 1025 molecules of CO2? The moiar mass of co2 is 44.01gimoi. :-

A: The mass of CO2 is calculated by finding moles of CO2.

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A:

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Q: how many moles of Fe3O4 are required to supply enough iron to prepare .260 mol Fe2O3?

A: 1 mole of Fe2O3 contains 2 moles of Fe. Hence, 0.260 moles of Fe2O3 will contain 0.260 * 2 = 0.520…

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Q: One molecule of a compound weighs 2.03 × 10‒22g. What is its molar mass?

A: Molar mass is the mass of 1 mole of the substance or 6.022×10²³ particles, expressed in grams.

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Q: What is the mass percentage of O in CO2? Provide an answer to two decimal places.

A: Given,  The mass percentage of O in CO2 is:

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Q: What is the molar mass, in g/mol, of the hydrate compound with the proposed formula of CrCl3⋅3H2O

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Q: What is the mass percentage of C in morphine, C1,H19NO,?

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A: The given reaction is

Q: What mass in grams of Cu(IO3)2 can be produced from 0.750 g of CuSO4 x 5H2O?

A:

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Q: Question attached

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Q: 5. What is the theoretical yield of MgO from the combustion of 5.25 x1023 atoms of Mg and 4.69 ×1023…

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Q: Mg(OH)2(s)+2HNO3(aq)→   the balanced chemical formula?

A: Above reaction is double displacement reaction i.e neutralization reaction.

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Q: What is the mass, in grams, of 4.06 1023 molecules of aspirin, C9H8O4?

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Q: what is the mass percentage composition of the elements in the following compounds? Round to the…

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.