Calcium perbromate, Ca(BrO,), (m.w.= 327.9 g/mol) decomposes upon heating to release oxygen gas according to the equation below. A sample containing Ca(Bro,), is heated and the gas produced collected by downward displacement of water at 50.0°C. The total volume of gas collected was 438.0 ml at an atmospheric pressure of 680.0 torr.

Q: One way to collect zinc is to react solid zinc (II) oxide with carbon, which produces solid zinc and…

A: The number of moles of any substance can be calculated by dividing its mass and molar mass, the…

Q: The ratio between two substances given by the balanced chemical reaction is called the

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Q: The maximum percent yield you can have in any reaction is %. Two reasons why you may not be able to…

A: When reaction give some other product with our desired product  called by-product .

Q: what is the mass in grams of aluminum iodide that would be required to yield an actual amount of…

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Percent yield = (actual…

Q: 18.500 1. Mass of crucible+ cover 18.702 2. Mass of crucible + cover+ Mg 3. Mass of Mg 4. Mass of…

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Q: 1. Calcium nitrate and sodium hydroxide react to form calcium hydroxide and sodium nitrate. a.…

A: Given, mass of NaOH = 25.0 g  Mass of Ca(NO3)2 = 30.0 g

Q: Identify limiting reactants and calculate amounts, in grams or moles, of reactants consumed and…

A: Limiting reactant is the reactant which completely consume in the reaction after some time and then…

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Q: When we inhale oxygen, we expire it as water vapors. We can regenerate oxygen by reacting the water…

A: The balanced chemical equation for the reaction of KO2 with water is  2KO2+2H2O→2KOH+O2+H2O2

Q: How many mole (g-mole) of carbon dioxide CO2 are contained in 438.0 g of carbon dioxide CO2? Use two…

A: Here we have to calculate gram- mole of carbon dioxide in 438 gram of CO2.

Q: 43. If 0.500 mol of CaCl2 is mixed with 0.200 mol Na3PO4, the maximum amount in moles of Ca3(PO4)2…

A: Interpretation -  If 0.500 mole of CaCl2 is mixed with 0.200 mole of Na3PO4 , then we have to…

Q: The percent yield for a given reaction is 47%. If the theoretical amount is predicted to be 5.29 g,…

A: Formula for calculating percent yield: Percent yield = 100 x Actual yield/Theoretical yield

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A: Mass of copper foil = 1.0762 g Moles of copper foil = 0.016935 moles

Q: When 11.8 grams of aluminum are reacted with 81.9 grams of chlorine, determine the theoretical yield…

A:

Q: The molar mass of a substance is 26.5G/mol. What is the amount of substance in a sample of 36g?

A:

Q: Your lab partner asks "How do I convert from moles of CO2 to grams of CO2?" What do you tell him?…

A: What is mole? Mole is the number of the atom/ molecule/ions which equal to 6.022 × 1023(Avogadro's…

Q: Aqueous sulfuric acid (H₂SO4) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A:

Q: How do you find the molar mass of a solute? What do you do with it to find the number of moles of a…

A: Explained as follows

Q: In order to: Convert from grams of a substance to moles of a substance would you multiply or divide…

A: Moles = given mass(g) /molar mass (g/mol) Grams = moles*molar mass(g/mol)

Q: -What are two possible reasons why percentage yield is different from 100%

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Q: How can the coefficients in a balanced chemical reaction be used to convert from moles of a reactant…

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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.