Percent yields are generally calculated from mass quantities.Would the result be the same if mole quantities were used in-stead? Why?

Q: What is a mole of a substance? O alaboratory spoon full of a substance O The amount of a substance…

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Q: Mass of oxygen = 0.49g- 0.33g = 0.16g Number of moles = given mass / molar mass Number of moles of…

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Q: Determination of a chemical formula, mass of crucible is 14.9234g, crucible + hydrated sample is…

A: Given  Mass of Crucible = 14.9234  Mass of hydrated sample = 1.6618 gram Mass of crucible + Mass of…

Q: Stoichiometry can be used to determine the mass (in grams) of a product. O True O False

A:

Q: How many conversions are needed to go from mass (g) of the given to Mole (Y) of the find ?

A: We have been asked to find the no. Of steps needed to go from mass to mole of a compound.

Q: Percent yields are generally calculated from masses. Would the result be the same if amounts (mol)…

A: Yes, same result will be obtained. Formula: Percent yield = actual mass of product…

Q: What advantage is there to using a counting unit (the mole) for amount of substance rather than a…

A: To explain the advantage of using mole unit instead of mass unit.

Q: The weight in grams of NaOH can be computed if the number of moles and the molar mass are given. O…

A: Using mole concept easily determines how much mole , molecular weight is used or formed in any…

Q: How many grams are in 5.32 x 1022 molecules of CO. ?

A: The amount of 5.32x1022 molecules of CO2 is to be calculated.

Q: A stack of 500 sheets of typewriter paper is 1.9 inches thick. The thickness, in inches, of a stack…

A: Number of sheets in a stack = 3.01 × 1023 One mole contains Avogadro’s number of sheets. Therefore,…

Q: What is the percent by mass of hydrogen in sulfuric acid

A: Molar Mass of H = 1 g/mol Molar mass of H2SO4 = 98 g/mol

Q: e percent yield of c

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Q: Magnesium at start is 0.33g   mass at end is 0.49 g    Determine the number of moles of magnesium…

A: The no of moles can be calculated by the following formula. no of moles=massmolar mass Molar mass of…

Q: determine the mass (g) of carbon in 16.55 g of glucose. Plan To find the mass of C in the sample of…

A: We know that, Molecular mass of glucose, C6H12O6 = 180.156 g/mol Number of Carbon atoms in glucose =…

Q: What is mass percent composition? Why is it useful?

A: Mass percent composition refers to the mass of the component in 100 g of the solution.

Q: Why are coefficients used in mole ratios instead ofsubscripts?

A: Mole ratio It is the ratio between the number of moles of any two compounds in a balanced equation…

Q: What is the percent by mass N in Magnesium Nitrate?

A: Atomic mass of N =  14 g mol-1 Molar mass of Magnesium Nitrate (Mg(NO3)2) = 148.3 g mol-1

Q: mass: mole: mol

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Q: when a chemical reaction occurs, the total mass of the substances involved in the reaction does not…

A: According to the law of conservation of mass, matter can neither be created nor destroyed.…

Q: Why must a chemical equation be balanced before youcan determine mole ratios?

A: In a balanced chemical equation stoichiometric coefficients of reactants and products are known.…

Q: What experimental information do you need in order tocalculate both the theoretical and the percent…

A: To calculate the theoretical yield of any chemical reaction, we need to know the quantity of one of…

Q: d. How many grams of phosphorus pentachloride are theoretically produced? If 0.450g of phosphorus…

A: From the given problem, the balanced equation is: P4 (s) + 10 Cl2 (g) → 4PCl5 (s) For chlorine gas…

Q: What is the mole ratio of all the substances represented in this figure?

A: A mole ratio can be described as ​the ratio between the amounts in moles of the any two compounds…

Q: What advantage is there to using a counting unit (the mole) inchemistry rather than a mass unit?

A: Using counting unit as mole in chemistry is advantageous as with help of this we can inter convert…

Q: finding the number of moles of Zn(OH), produced i

A: To find the correct set up we need to correlate  Zn and Zn(OH)2 in terms of moles

Q: What are the two conversion factors (mole ratios) that can be used for converting between moles of…

A: 6Li(s) + N2(g) ------> 2Li3N(s)  6 moles of Li reacting with 1 mole of N2 produces 2 moles of…

Q: How many molecules (not moles) of NH3 are produced from 7.42×10−4 g of H2?

A: To obtain the number of molecules, first of all the reaction for the production of NH3 should be…

Q: how do i determin the mole ratios in a chemical reaction?

A: A mole ratio is the ratio between the number of moles of any two compounds involved in a chemical…

Q: What information beyond the mole ratio is needed to convert from moles of a reactant to grams of…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: 5 g of hydrated barium chloride is heated in a crucible until the mass of the sample no longer…

A: Given: Mass of hydrated barium chloride = 5 g Mass of sample after heating = 4.26 g The loss of mass…

Q: mass of 1.2 × 10^23 atoms of phosphorus (molar mass= 31 gm/mo

A: The one mole of a substance contains 6.022×1023 number of its atoms.here moles of…

Q: Can we calculate a chemical formula from a mass percent composition? How?

A: Introduction: Percent composition:  Percent composition is defined as the ratio of mass of each…

Q: What is the amount of H present in the original sample, in moles?

A: We have moles of H2O in the compound = 0.00610   (= Given mass of water (0.110 g) divided by the…

Q: how many moles of N, are needed?

A: Balanced chemical equation :-  3H2(g) + N2(g) -----> 2NH3(g)   When 3 moles of H2 react with 1…

Q: ,how many moles of dichloromethane (CH,Cl) will be formed

A: Number of moles = mass/molar mass  Molar mass of CH4  = 16.0425 g/mol

Q: ne theoretical yield of

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Q: e percentage yield of the product is:

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Q: Completé the föllóWing tåbles. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in…

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Q: What does the term stoichiometrically equivalent molar ratiomean, and how is it applied in solving…

A: A chemical reaction is essentially a system which involves a large collection of particles (atoms,…

Q: A comppound has the following percentages by mass :copper 33.88%,nitrogen…

A: Given,  The percentages by mass : Copper (Cu) = 33.88%,                        Nitrogen (N)=14.94%,…

Q: (a) what is Avogadro’s number, and how is it related to the mole? (b) What is the relationship…

A: We have to show the correlation between  Avogadro’s number and number of moles. Also we have to show…

Q: What is the percent yield of Na?

A: Given :-  Actual yield = 26 g  Theoretical yield = 46 g To calculate :- percent yield

Q: The percent by mass of bromine in SiCl2Br2 is

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Q: in 17.83 moles of carbon dioxide?

A: Molar mass(MM) of CO2 = 12 + 2×16 = 32 g Moles = mass/MM Mass = moles × MM   = 17.83×44 = 784.5 g

Q: Mass % of H in ammonium bicarbonate

A: Given  Name of Compound = Ammonium bicarbonate Mass % of H = ?

Q: The molar mass is the mass of 6.022 x 1023 particles of matter. O True OFalse

A: We know that, Avogadro number =6.022 × 1023 partical/mol so,

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".