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Calculations in topic 2 chemistry quiz

greenchloe1998 10 preguntas

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Preguntas del test (10)

  1. 1choose the correct flame colour for calcium in a flame test.
    1. Aorangey-redImagen de la opción A
    2. BpurpleImagen de la opción B
    3. Cyellow- orangeImagen de la opción C
    4. Dred-pinkImagen de la opción D
    5. EgreenImagen de la opción E
  2. 2choose the correct flame colour for potassium in a flame test.
    1. AgreenImagen de la opción A
    2. Borangey-redImagen de la opción B
    3. Cred- pinkImagen de la opción C
    4. Dpurple/lilacImagen de la opción D
    5. Eyellowy- orangeImagen de la opción E
  3. 3In a cation precipitation reaction test, we added sodium hydroxide to Aluminium (3+) , what was the colour of the precipitate formed?
    1. Ablue
    2. Bgreen
    3. Cwhite
    4. Dbrown
  4. 4In a cation precipitation reaction test, we added sodium hydroxide to iron (3+), what was the color of the precipitate formed?
    1. Abrown
    2. Bwhite
    3. Cblue
    4. Dgreen
  5. 5When testing for halide ions we added a small amount of the solution to a test tube, added a few drops of dilute nitric acid and silver nitrate. The test tube with Cl- ions in it would be which colour?
    1. Awhite
    2. Bcream
    3. Cyellow
  6. 6Wen testing for halide ions we added a small amount of the solution to a test tube, added a few drops of dilute nitric acid and silver nitrate. The test tube with Br- ions in it would be which colour?
    1. Awhite
    2. Bcream
    3. Cyellow
  7. 7Wen testing for halide ions we added a small amount of the solution to a test tube, added a few drops of dilute nitric acid and silver nitrate. The test tube with I- ions in it would be which colour?
    1. Awhite
    2. Bcream
    3. Cyellow
  8. 8Concentration = mass/ volume.
    id I had 10cm cubed of a 0.4g/dm cubed solution, what would the mass be?
    1. A0.004 g
    2. B0.34
    3. C0.0009
  9. 9mass = moles multiplied by formula or atomic mass.
    We have 9 grams of water ( H20).
    work out the moles here.
    1. A0.5
    2. B2
    3. C8
  10. 10moles = volume * concentration.we have HCL with a concentration of 2 mols, and a volume of 20cm cubed. We also have a volume of 25 cm cubed of NaOH.
    What is the concentration of NaOH?
    1. A2 mol dm-3
    2. B1.6 mol dm-3
    3. C3.8 mol dm-3

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Test sobre Calculations in topic 2 chemistry quiz, creado por greenchloe1998 el 01/02/2015.
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