875620
Description
Quiz by Megan McLean, updated more than 1 year ago
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Created by Megan McLean
over 12 years ago
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Question 1
Question
The relative atomic mass can be defined by......
Answer
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Average mass of one atom of an element x 12 ------------------------------------------------------------------- Mass of an atom of C12
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Average mass of one atom of an element x 12 ------------------------------------------------------------------- Mass of 1/12th of an atom of C12
Question 2
Question
Number of moles.....
Answer
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m/mr
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mr/m
Question 3
Question
Ideal gas equation is.....
Answer
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PV/T
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PV=nRT
Question 4
Question
How do you calculate the molecular formula?
Answer
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Relative mass of empirical formula ----------------------------------------------------- Relative molecular mass
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Relative molecular mass ------------------------------------------------------ Relative mass of empirical formula
Question 5
Question
Concentration = ...........
Answer
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Volume in dm --------------------------- Number of moles
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Number of moles ---------------------------- Volume in dm
Question 6
Question
Number of moles in solution....
Answer
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M x 1000 ------------- V
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M x V ---------- 1000
Question 7
Question
Atom Economy (%)......
Answer
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Mass of desired product ------------------------------------ x1000 Total mass of product
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Mass of desired product ---------------------------------- x100 Total mass of product
Question 8
Question
Yield of a chemical reaction......
Answer
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The number of moles or grams of a specified product -------------------------------------------------------------------------------- x 100 Theoretical maximum number of moles or grams of the product
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The number of moles or grams of a specified product -------------------------------------------------------------------------------- x 1000 Theoretical maximum number of moles or grams of the product
Question 9
Question
Yield of a chemical reaction......
Answer
-
The number of moles or grams of a specified product -------------------------------------------------------------------------------- x 100 Theoretical maximum number of moles or grams of the product
-
The number of moles or grams of a specified product -------------------------------------------------------------------------------- x 1000 Theoretical maximum number of moles or grams of the product
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