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3 years ago

What other means of qualitative analysis are used to identify metals(At least five)

Chemistry

2 answers:

77julia77 [94]3 years ago

4 0

Answer: Explanation:

1. Insoluble Chlorides

2. Acid-Insoluble Sulfides

3. Base-Insoluble Sulfides (and Hydroxides)

4. Insoluble Carbonates or Phosphates

5. Alkali Metals

In qualitative analysis, the identity, not the amount, of metal ions present in a mixture is determined. The technique consists of selectively precipitating only a few kinds of metal ions at a time under given sets of conditions. Consecutive precipitation steps become progressively less selective until almost all the metal ions are precipitated.

Klio2033 [76]3 years ago

3 0

Answer:

The use of spectrum(Flame taste)

Chemical reaction

The use of indicators

Mass spectrometry

By bombarding with cathode rays(this method was used by Mosley to search for atomic number of each element)

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3 years ago

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At a certain temperature the speeds of six gaseous molecules in a container are 2.0 m/s, 2.2 m/s, 2.6 m/s, 2.7 m/s, 3.3 m/s, and

iren [92.7K]

Answer:

root-mean-sqaure = 2.77 m/s

average = 2.72 m/s

The root-mean-square is always the largest because it takes account of the variance of the spread of the data. The increase is related to the fact that the data varies to sample.

Explanation:

The rootmean-square (R) is the square root of the squares of the valeus divided by the number of the datas.

$R = \sqrt{\frac{x1^2 + x2^2 +...+xn^2}{n} }$