Show your work and report your results with the corre figures. 8008. 1. Calculate the mass percent of calcium in CASO4.

Q: C. What is the mass (in grams) of 5.03 × 1022 molecules of CO2 molecules?

A: Number of molecules of any species is given by, => Number of molecules = moles X Avogadro's…

Q: The “lead” in lead pencils is actually almost pure carbon and the mass of a period mark made by a…

A: Answer = 5.02 x 10 19

Q: What is the mass percentage

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Q: Calculate the mass percent of Zn in ZnO.  Report your answer to 1 decimal place.

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Q: The refining of aluminum from bauxite ore (which contains 50.% Al2O3 by mass) proceeds by the…

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Q: What is the mass percentage of carbon in C6H12O3? Express your answer as a percentage (i.e., out of…

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Q: A sample of a compound with the molecular formula C20H24N2O2 contains 2.75 x 1024 nitrogen atoms.…

A: Molar mass of any substance is the mass of one mole of the substance, which is expressed as g/mol.…

Q: An Organic compound contains 59.00% by mass C, 7.15% by mass H, 7.65% by mass N, and 26.20% by mass…

A:

Q: Assume that the molar mass of A is 82.93 grams per mole and the molar mass of E is 24.61 grams per…

A: Atoms are the smallest unit of the matter, anything which occupies space and has mass is known as…

Q: A sample of nickel silver contains 18.0% nickel by mass. What mass of nickel silver must be melted…

A: Given: Sample of Nickel Silver contains: 18% Nickel by mass.

Q: Calculate the molar mass of Iron(III) chloride hexahydrate: FeCl3• 6H20. O 162.29 g/mol O 180.29…

A: Given  Molar mass of EDTA disodium salt dihydrate = 372.24 g/mole Molar Mass of FeCl3.6H2O Molar…

Q: The hydrated salt, MY3.XH2O, was heated strongly in a crucible to remove all the water molecules of…

A: From the given information , we have,         Mass of empty cruicible and cover, m1 = 28.86 g…

Q: Sand is mainly silicon dioxide. When sand is heated with an excess of coke (carbon), pure silicon…

A: Given : Silicon dioxide reacts with coke i.e carbon to produce silicon and carbon monoxide. Hence…

Q: Hydrates take the form: compound·nH2O. An unknown hydrate has a molar mass of 446 g/mol.  If the…

A:

Q: Quartz, SiO2, contains 46.7% silicon. What mass of silicon is present in 370 g of quartz?

A: To solve this problem we have to calculate the mass of silicon present in quartz .

Q: 1. As of today Silver is trading at $27.10 per ounce. Recall that 1 ounce = 28g. If we mine 2.5x106…

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Q: 6. A student reported the following percentages for his unknown mixture: 25% NH4CI, 30% NaCI, and…

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Q: Find the percent, by weight, of each component.

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Q: Caffeine (MM = 194.2 g/mol) is a small molecule that many people ingest for its stimulant effects.…

A: Given molar mass of caffeine = 194.2 g/mol percentages C = 49.5℅ N = 28.9℅ H = 5.19℅ O = 16.5 ℅

Q: This is the chemical formula for chromium(III) nitrate: CrNO33. Calculate the mass percent of…

A: The Mass Percentage of Nitrogen in Chromium (III) Nitrate can be calculated as follows -

Q: 1.Glucose is an important biological molecule with the molecular formula C₆H₁₂O₆. What is its…

A: 1.Glucose is an important biological molecule with the molecular formula is C₆H₁₂O₆. An empirical…

Q: the formula for disulfiram decafluoride is S2F10   A.How many molecules are in 1.35 grams of…

A: A.

Q: is-(CH2CHCHCN)n

A: molar mass =( W / moles    Weight = 755.9 gm = 0.7559 Kg   Moles = molecules / avagadro number…

Q: A 10.05 g10.05 g sample of Mo2O3(s)Mo2O3(s) is converted completely to another molybdenum oxide by…

A: Atomic weight of molybdenum = 95.94.Atomic weight of oxygen = 16.00Percentage of oxygen added…

Q: B. TRUE OR FALSE: Read each statement carefully. Write TRUE if the statement is correct and FALSE if…

A: Percentage composition gives a brief ideas about each elemental composition as follows.

Q: This is the chemical formula for hexanal: CH3CH24CHO. Calculate the mass percent of hydrogen in…

A: Molecular Formula of hexanal is C6H12O  And Molecular weight of hexanal is 100.1568 g/mol  Complete…

Q: 2a. Calculate the volumes of ammonia and oxygen required to produce 28 moles of nitrogen dioxide.…

A: Given: The number of moles of NO2 is 28 mol. The given reaction is: 4NH3+7O2→4NO2+6H2O

Q: Consider a 134.5 g sample of the compound manganese(IV) perchlorate. Using the formula Mn(ClO₄)₄ (MM…

A: Weight of sample = 134.5 gm  Molar mass of MN(ClO4)4 = 452.74 g/mole

Q: The empirical formula of a compound containing carbon, hydrogen and bromine is C₂H₄Br. The molar…

A:

Q: In one sentence explain what's wrong with this equation, and rewrite it so that the coefficients are…

A: Answer:- C3H6(g)   +  4.5 O2(g)   -------> 3CO2(g)   +    3H2O(g) In this equation the…

Q: Calculate the percentage by mass of magnesium in magnesium sulphate (MGSO4). 24 +32 +16 ×4 = 120 .

A: Introduction The percentage by mass of any element that is available in any particular compound can…

Q: The formula for carbon tetrafluoride is CF4   A.How many molecules are in 4.19 grams of carbon…

A: The formula for carbon tetrafluoride is CF4 Molar mass of CF4 = 88 g mol-1

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".