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kozerog [31]
3 years ago
13

The pictures below show samples of different substances.

Chemistry
2 answers:
zalisa [80]3 years ago
4 0

Answer:

C. Yes, if each sample contains 6.02 x 1023 atoms

Explanation: just got it correct on edge

Mrrafil [7]3 years ago
3 0

Answer:

C. Yes, if each sample contains 6.02 x 10²³ atoms.

Explanation:

It is possible for each sample to contain 1 mole of each sample if and only if each of the sample if made up of 6.02 x 10²³ atoms.

6.02 x 10²³ atoms is the Avogadro's number. This number is equivalent to a mole of a substance.

  • If the amount of matter in the given substance is at least one mole, it is possible that they are made up of one mole each of each substance.
  • If they contain lesser amount of atoms, then it is not up to one mole of substance.
  • But if it is greater, then, we can have even more than one mole of substance.

A mole is simply a unit of measurement and it is equivalent to 6.02 x 10²³ atoms.

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Answer:

The compound is Na2CO3

Explanation:

A flame test of a colorless solution gives a bright yellow color. The yellow color shows the presence of Sodium.

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When reacted with AgNO3 a white precipitate.

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A white precipitate will be formed when AgNO3 reacts with Sodium Chloride (NaCl) or Sodium carbonate(Na2CO3). (Also NaF, Na3PO4 are possible).

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Forming bubbles means that there is formed CO2 (and H20)

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This shows that X is CO3 and the compound is Na2CO3

<u>To control:</u>

Na2CO3 + AgNO3 → Ag2CO3 + NaNO3

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This precipitate Ag2CO3 + HNO3 will disolve in AgNO3, CO2 and H2O

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The compound is Na2CO3

3 0
4 years ago
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Explanation:

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