Amount of substance

Descripción

(Chem 1) AS Chem Test sobre Amount of substance, creado por Megan McLean el 14/05/2014.
Megan McLean
Test por Megan McLean, actualizado hace más de 1 año
Megan McLean
Creado por Megan McLean hace más de 10 años
25
2

Resumen del Recurso

Pregunta 1

Pregunta
The relative atomic mass can be defined by......
Respuesta
  • Average mass of one atom of an element x 12 ------------------------------------------------------------------- Mass of an atom of C12
  • Average mass of one atom of an element x 12 ------------------------------------------------------------------- Mass of 1/12th of an atom of C12

Pregunta 2

Pregunta
Number of moles.....
Respuesta
  • m/mr
  • mr/m

Pregunta 3

Pregunta
Ideal gas equation is.....
Respuesta
  • PV/T
  • PV=nRT

Pregunta 4

Pregunta
How do you calculate the molecular formula?
Respuesta
  • Relative mass of empirical formula ----------------------------------------------------- Relative molecular mass
  • Relative molecular mass ------------------------------------------------------ Relative mass of empirical formula

Pregunta 5

Pregunta
Concentration = ...........
Respuesta
  • Volume in dm --------------------------- Number of moles
  • Number of moles ---------------------------- Volume in dm

Pregunta 6

Pregunta
Number of moles in solution....
Respuesta
  • M x 1000 ------------- V
  • M x V ---------- 1000

Pregunta 7

Pregunta
Atom Economy (%)......
Respuesta
  • Mass of desired product ------------------------------------ x1000 Total mass of product
  • Mass of desired product ---------------------------------- x100 Total mass of product

Pregunta 8

Pregunta
Yield of a chemical reaction......
Respuesta
  • 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

Pregunta 9

Pregunta
Yield of a chemical reaction......
Respuesta
  • 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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