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makkiz [27]
4 years ago
5

Really need help!

Chemistry
2 answers:
WARRIOR [948]4 years ago
7 0
The magnitude of a star as it would appear to a hypothetical observer at a distance of 10 parsecs or 32.6 light-years. This rates how visible celestial bodies are when they are all viewed from the same distance. Luminosity: The brightness of a star in comparison with that of the sun.
vovangra [49]4 years ago
7 0
The magnitude of a star as it would appear to a hypothetical observer at a distance of 10 parsecs or 32.6 light-years. This rates how visible celestial bodies are when they are all viewed from the same distance. Luminosity: The brightness of a star in comparison with that of the sun.
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Question
Otrada [13]

Answer:

Add more pieces of zinc (2n) to the mixture

Heat the hydrochloric acid (HC) solution.

Explanation:

The reaction rate is simply the speed of the reaction. It is usually monitored by the rate at which the concentration of either of the reactants or products are changing per unit of time.

The factors affecting the rate of reactions are:

  • Nature of the reactants
  • Concentration or pressure of gases
  • Temperature of the reaction
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In this problem, if the concentration of the zinc increases, the rate of reaction will increase.

If the temperature of HCl increases, so also the rate of the reaction.

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Naya [18.7K]

the formula is(NH4)2SO4

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4 years ago
Which of the following is not a polyatomic ion? A) NO3-
viktelen [127]
CaCO₃ is a compound in and of itself thus it is not a polyatomic ion.
4 0
3 years ago
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ira [324]

Answer:

13. 8 hrs

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True or false
Gnesinka [82]

Answer:

false

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