The percent by mass of copper(I) in Cu,CO3 is %.

Q: Iron ore is impure, Fe2O3. When Fe2O3 is heated with an excess of carbon (coke), metallic iron and…

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Q: A 2.45g sample of strontium completley reacts with oxygen to from 2.89g of strontium oxide. What is…

A: Mass of Sr = 2.45 g  Mass of Strontium oxide = 2.89 g  Mass % =?

Q: ? g/mol

A: Pressure (P) = 742 torr     = 742/760 = 0.976 atm Temperature(T) = 99°c = 372 K Volume = 355 mL =…

Q: How many conversions are needed to go from mole (X) of the given to particles of the find ?

A: A question based on mole concept that is to be accomplished.

Q: What is the percent by mass of lithium in Li,O?

A: Percent by mass = (mass of Li/mass of Li2O) × 100%

Q: Suppose a student starts with 2.4185 g of a sand mixture and separates the components into 1.3012 g…

A: The mass percentage is the simplest way of representing the mass of the components present in the…

Q: percent hy

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Q: How many moles of NaOH are

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Q: What is the percent by mass of magnesium in MgO?

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Q: what is the percent by mass

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Q: How many molecules are in 22.4moles of CCI,?

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Q: What are the number of moles of in 10 g of CaCO3?

A: Given that: Mass of CaCO3 = 10 g  Molar mass of Ca = 40 g/mol Molar mass of C = 12 g/mol Molar mass…

Q: How many moles of H2 and N2 can be formed by the decomposition of 0.185 mol of ammonia, NH3?

A: The decomposition reaction of ammonia that will take place is  2 NH3 ------> N2 + 3 H2

Q: How many moles of MgSiO, are in 163 g of the compound?

A: Number of moles of a substance is equal to the mass of the substance divided by its molar mass.

Q: hat is the percent composition by mass of copper in 80.0kg of copper (ii) phosphate

A: To calculate the percent composition by mass of copper in 80.0kg of copper (ii) phosphate.

Q: at mass of AgK

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: percent by mass of sulfur in P4S10

A: The given question can be solved by using the mass percentage formula which is- Mass percent = Mass…

Q: e percent composition of

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Q: What is the percent by mass of calcium tungstate

A: Percent by mass of Ca in CaWO4 = (mass of Ca/mass of CaWO4) × 100% Percent by mass of W in CaWO4 =…

Q: Ascorbic acid (CH,O,) is also known as Vitamin C. What quantity in molecules of CH,O, does a Vitamin…

A: Given: Mass of C6H8O6 = 1025 mg Or mass of C6H8O6 = 1025 ×10-3 g And we know that the molar mass of…

Q: the molarity o) and final vo

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Q: mass of MnO,:

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Q: e the percent yield of se

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Q: What is the percent (by mass) water CaSO4.2H22O?

A: Here, we have calculate % by mass of H2O in CaSO4.2H2O.

Q: The number of moles of caffeine in 50.0 g of caffeine is?

A: The given Mass of caffeine = 50.0 g  Molecular formula of Caffeine is C8H10N4O2

Q: What is the mass percentage of C in morphine, C,,H1,NO,? Provide an answer to two decimal places.

A: We have many molecules around us. They all are composed of different elements and have different…

Q: e molarity ofs

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Q: Which molecule has the highest percent by mass of hydrogen?

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Q: A binary compound of carbon and hydrogen has the following percentage composition: 82. 66% carbon,…

A: Given a binary compound of carbon and hydrogen. Carbon % = 82.66 %Hydrogen % = 17.34 %

Q: Percent yields are generally calculated from mass quantities.Would the result be the same if mole…

A: Interpretation- To explain with reason for the result of calculating percent yield using mole…

Q: What is the percent by mass of iron (Fe) in FeCO3?

A: Molar Mass of FeCO3 = 115.85 g/mol Weight of 1 Fe atom =55.85 Weight of 1 C atom = 12 Weight of 3 O…

Q: The percent by mass of cobalt(III) in CoI3 is %.

A: Compound = CoI3 Molar mass of Co = 59.0g/mol Molar mass of I = 127g/mol Molar mass of CoI3 =…

Q: Mass % of H in ammonium bicarbonate

A: Answer: 6.38%

Q: Define percentage by mass

A: Percentage by mass is defined as the ratio of mass of solute by mass of solution (solute+solvent)…

Q: 4) 4.00 mole H,0 to grams 5) 815 grams Cal(OH), to mole

A: For 4) moles of H2O = 4.00mol   We know that, molar mass of H2O = 18gNow,mass of H2O = no of moles x…

Q: Percent Composition by Mass: = 3.907 g of carbon combines completely with O.874 g of hydrogen to orm…

A: The question is based on the concept of calculation of mass percent. the mass percent of an element…

Q: ny moles of HCI we

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Q: he mass percent o

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Q: What is the mass percent of ethanol (CHCHOH) if 0.0796 moles of ethanol is added to 0.257 kg of…

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Q: What mass of of sugar is needed to combine with 250 g of water to prepare a sugar-water mixture that…

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Q: A student, Ken, is given a mixture containing two nitrate compounds. The mixture includes NaNO, and…

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Q: In a lab, a grade 11 chemistry student measured 0.30g of solid magnesium metal. The student proceeds…

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Q: What is the mass percent of magnesium

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Q: How many grams of S are in 725 g of SO, ? mass:

A: Given  Mass of SO2    =  725 gram  Mass of Sulfur =  ?

Q: The percent by mass of bromine in SiCl2Br2 is

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Q: The percent by mass of silver in Ag,CO3 is %.

A: Molecular mass of Ag2CO3 = 2*atomic mass of Silver + atomic mass of Carbon + 3*atomic mass of Oxygen…

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,

Q: 16. 2K + Br, 2KBR 71.1g Br, is reacted, and 64.1g KBr is produced. What is the percent yield for the…

A: The given chemical reaction is: 2K+Br2→2KBr. Then, 1g of Br2 formed --- 64.1g of KBr. Calculate the…

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.