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chem
22問 • 2年前
  • Conan Clint
  • 通報

    問題一覧

  • 1

    name of Experiment No. 1

    Preliminary Experiment in Alkali Metal Group

  • 2

    Sodium salts give a persistent???

    yellow color to the flame of violetand red

  • 3

    violet?

    4045 A

  • 4

    red

    7665-1699 A

  • 5

    precipitation test for sodium and potassium are not entirely satisfaction, we shall rely entirely on the???

    flame test

  • 6

    lFor identification of potassium, it is necessary to view the flame through an

    optical filter

  • 7

    is a color of plastic with three bands of different colored filtering materials and a chart listing of characteristic flame colors of several common elements as observed through each of the three bands

    merwin color screen

  • 8

    relatively weak base

    ammonium

  • 9

    steps presences of ammonium hydroxide

    ) addition of excess strong base to the ion into the molecular ammonia. 2) heating alkali solution of excess ammonia. 3) and absorbing the liberated ammonia in red litmus paper

  • 10

    Apparatus/Instruments

    Beaker (small) Tripod Alcohol lamp Dropper evaporating dish watch glass Erlenmeyer flask wire loops test tube (4) test tube rack

  • 11

    Chemicals/Reagents

    Ammonium nitrate sodium hydroxide Hydrochloric acid potassium nitrate Sodium nitrate

  • 12

    Select a beaker that will support an evaporating dish for steam bath. Bring about___?

    25 ml of water

  • 13

    what is the activity in A

    preparation of ammonium ions

  • 14

    then moisten a strip of__and lay it on the ___ side of the watch glass

    red litmus paper, convex

  • 15

    Put____in an evaporating dish and add 10 drops of ____ Then add __solution drop wise until the solution in the dish is alkaline, and then add drops in excess

    2 ml of water 0.1 M ammonium nitrate solution. 6N sodium hydroxide

  • 16

    acrivity in B

    flame test for na+ ions

  • 17

    activity test for c?

    flame test for k ions

  • 18

    activity in D

    test for k ion and na ion in the presence of each other

  • 19

    Prepare two wire loops, clean each loop by alternately heating it to redness and quickly dip into a __n a watch glass.

    6 N hydrochloric acid i

  • 20

    Prepare 2 ml of ___solutions by mixing the required volume of nd water.

    0.02 M of NaNO3 0.1 M NaNO3 a

  • 21

    add __drops of __, dip a clean wire loop into the acidified solution and place into an oxidizing flame.

    5, 12 M hydrochloric acid

  • 22

    __ ml of 0.02 M __ and add _drops of 12 M hydrochloric acid

    2.5 KNO3 5

  • anaphy

    anaphy

    Conan Clint · 100問 · 2年前

    anaphy

    anaphy

    100問 • 2年前
    Conan Clint

    anaphy 2

    anaphy 2

    Conan Clint · 6問 · 2年前

    anaphy 2

    anaphy 2

    6問 • 2年前
    Conan Clint

    cardio

    cardio

    Conan Clint · 56問 · 2年前

    cardio

    cardio

    56問 • 2年前
    Conan Clint

    anatomy

    anatomy

    Conan Clint · 51問 · 2年前

    anatomy

    anatomy

    51問 • 2年前
    Conan Clint

    muscles

    muscles

    Conan Clint · 100問 · 2年前

    muscles

    muscles

    100問 • 2年前
    Conan Clint

    endocrine system

    endocrine system

    Conan Clint · 100問 · 2年前

    endocrine system

    endocrine system

    100問 • 2年前
    Conan Clint

    muscles part 2

    muscles part 2

    Conan Clint · 34問 · 2年前

    muscles part 2

    muscles part 2

    34問 • 2年前
    Conan Clint

    cardiovascular

    cardiovascular

    Conan Clint · 100問 · 2年前

    cardiovascular

    cardiovascular

    100問 • 2年前
    Conan Clint

    cardiovasular 2

    cardiovasular 2

    Conan Clint · 36問 · 2年前

    cardiovasular 2

    cardiovasular 2

    36問 • 2年前
    Conan Clint

    cranial merves

    cranial merves

    Conan Clint · 100問 · 2年前

    cranial merves

    cranial merves

    100問 • 2年前
    Conan Clint

    spinal cord and sinal nerves

    spinal cord and sinal nerves

    Conan Clint · 81問 · 2年前

    spinal cord and sinal nerves

    spinal cord and sinal nerves

    81問 • 2年前
    Conan Clint

    purcom shits

    purcom shits

    Conan Clint · 6問 · 2年前

    purcom shits

    purcom shits

    6問 • 2年前
    Conan Clint

    endocrine system part 222

    endocrine system part 222

    Conan Clint · 20問 · 2年前

    endocrine system part 222

    endocrine system part 222

    20問 • 2年前
    Conan Clint

    respiratory shits system

    respiratory shits system

    Conan Clint · 76問 · 2年前

    respiratory shits system

    respiratory shits system

    76問 • 2年前
    Conan Clint

    spinal cord

    spinal cord

    Conan Clint · 81問 · 2年前

    spinal cord

    spinal cord

    81問 • 2年前
    Conan Clint

    respiratory system in anatomy lab

    respiratory system in anatomy lab

    Conan Clint · 100問 · 2年前

    respiratory system in anatomy lab

    respiratory system in anatomy lab

    100問 • 2年前
    Conan Clint

    respiratory alab part 2

    respiratory alab part 2

    Conan Clint · 6問 · 2年前

    respiratory alab part 2

    respiratory alab part 2

    6問 • 2年前
    Conan Clint

    digestive system

    digestive system

    Conan Clint · 100問 · 2年前

    digestive system

    digestive system

    100問 • 2年前
    Conan Clint

    digestive system part 2

    digestive system part 2

    Conan Clint · 21問 · 2年前

    digestive system part 2

    digestive system part 2

    21問 • 2年前
    Conan Clint

    pmls

    pmls

    Conan Clint · 39問 · 2年前

    pmls

    pmls

    39問 • 2年前
    Conan Clint

    cardiovascular system

    cardiovascular system

    Conan Clint · 62問 · 2年前

    cardiovascular system

    cardiovascular system

    62問 • 2年前
    Conan Clint

    pmls chuchu

    pmls chuchu

    Conan Clint · 20問 · 2年前

    pmls chuchu

    pmls chuchu

    20問 • 2年前
    Conan Clint

    pmls clinical laboratory

    pmls clinical laboratory

    Conan Clint · 34問 · 2年前

    pmls clinical laboratory

    pmls clinical laboratory

    34問 • 2年前
    Conan Clint

    wprksheet 18

    wprksheet 18

    Conan Clint · 77問 · 2年前

    wprksheet 18

    wprksheet 18

    77問 • 2年前
    Conan Clint

    urinary system

    urinary system

    Conan Clint · 78問 · 2年前

    urinary system

    urinary system

    78問 • 2年前
    Conan Clint

    digestive system

    digestive system

    Conan Clint · 100問 · 2年前

    digestive system

    digestive system

    100問 • 2年前
    Conan Clint

    digestive system p2

    digestive system p2

    Conan Clint · 23問 · 2年前

    digestive system p2

    digestive system p2

    23問 • 2年前
    Conan Clint

    anatomy blood pressure

    anatomy blood pressure

    Conan Clint · 44問 · 2年前

    anatomy blood pressure

    anatomy blood pressure

    44問 • 2年前
    Conan Clint

    reproductive system

    reproductive system

    Conan Clint · 82問 · 2年前

    reproductive system

    reproductive system

    82問 • 2年前
    Conan Clint

    final boss

    final boss

    Conan Clint · 47問 · 2年前

    final boss

    final boss

    47問 • 2年前
    Conan Clint

    art appreciation

    art appreciation

    Conan Clint · 24問 · 2年前

    art appreciation

    art appreciation

    24問 • 2年前
    Conan Clint

    chem 1

    chem 1

    Conan Clint · 27問 · 2年前

    chem 1

    chem 1

    27問 • 2年前
    Conan Clint

    pmls

    pmls

    Conan Clint · 45問 · 2年前

    pmls

    pmls

    45問 • 2年前
    Conan Clint

    vhem

    vhem

    Conan Clint · 32問 · 2年前

    vhem

    vhem

    32問 • 2年前
    Conan Clint

    arts shets

    arts shets

    Conan Clint · 29問 · 2年前

    arts shets

    arts shets

    29問 • 2年前
    Conan Clint

    his shets

    his shets

    Conan Clint · 45問 · 2年前

    his shets

    his shets

    45問 • 2年前
    Conan Clint

    問題一覧

  • 1

    name of Experiment No. 1

    Preliminary Experiment in Alkali Metal Group

  • 2

    Sodium salts give a persistent???

    yellow color to the flame of violetand red

  • 3

    violet?

    4045 A

  • 4

    red

    7665-1699 A

  • 5

    precipitation test for sodium and potassium are not entirely satisfaction, we shall rely entirely on the???

    flame test

  • 6

    lFor identification of potassium, it is necessary to view the flame through an

    optical filter

  • 7

    is a color of plastic with three bands of different colored filtering materials and a chart listing of characteristic flame colors of several common elements as observed through each of the three bands

    merwin color screen

  • 8

    relatively weak base

    ammonium

  • 9

    steps presences of ammonium hydroxide

    ) addition of excess strong base to the ion into the molecular ammonia. 2) heating alkali solution of excess ammonia. 3) and absorbing the liberated ammonia in red litmus paper

  • 10

    Apparatus/Instruments

    Beaker (small) Tripod Alcohol lamp Dropper evaporating dish watch glass Erlenmeyer flask wire loops test tube (4) test tube rack

  • 11

    Chemicals/Reagents

    Ammonium nitrate sodium hydroxide Hydrochloric acid potassium nitrate Sodium nitrate

  • 12

    Select a beaker that will support an evaporating dish for steam bath. Bring about___?

    25 ml of water

  • 13

    what is the activity in A

    preparation of ammonium ions

  • 14

    then moisten a strip of__and lay it on the ___ side of the watch glass

    red litmus paper, convex

  • 15

    Put____in an evaporating dish and add 10 drops of ____ Then add __solution drop wise until the solution in the dish is alkaline, and then add drops in excess

    2 ml of water 0.1 M ammonium nitrate solution. 6N sodium hydroxide

  • 16

    acrivity in B

    flame test for na+ ions

  • 17

    activity test for c?

    flame test for k ions

  • 18

    activity in D

    test for k ion and na ion in the presence of each other

  • 19

    Prepare two wire loops, clean each loop by alternately heating it to redness and quickly dip into a __n a watch glass.

    6 N hydrochloric acid i

  • 20

    Prepare 2 ml of ___solutions by mixing the required volume of nd water.

    0.02 M of NaNO3 0.1 M NaNO3 a

  • 21

    add __drops of __, dip a clean wire loop into the acidified solution and place into an oxidizing flame.

    5, 12 M hydrochloric acid

  • 22

    __ ml of 0.02 M __ and add _drops of 12 M hydrochloric acid

    2.5 KNO3 5