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Rzqust [24]
3 years ago
5

Deforestation affects which of the following?

Chemistry
2 answers:
crimeas [40]3 years ago
6 0
Carbon cycle ................I think water cycle too.....
finlep [7]3 years ago
5 0

Answer:

water cycle and carbon cycle

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Virty [35]
Valleys i think !!! possibly
7 0
3 years ago
Which of the following would DECREASE the rate of a reaction?
tia_tia [17]

Answer: increasing volume

Explanation: adding a catalyst would increase reaction time and increasing  INCREASING concentration definently makes reaction time alot faster increasing pressure actually makes it more concentrated, so no it is not

8 0
2 years ago
If a tree dies and the trunk remains undisturbed for 13,750 years, what percentage of the original 14c is still present? (the ha
defon

Answer:

18.94%.

Explanation:

  • The decay of carbon-14 is a first order reaction.
  • The rate constant of the reaction (k) in a first order reaction = ln (2)/half-life = 0.693/(5730 year) = 1.21 x 10⁻⁴ year⁻¹.
  • The integration law of a first order reaction is:

<em>kt = ln [A₀]/[A]</em>

k is the rate constant = 1.21 x 10⁻⁴ year⁻¹.

t is the time = 13,750 years.

[A₀] is the initial percentage of carbon-14 = 100.0 %.

[A] is the remaining percentage of carbon-14 = ??? %.

∵ kt = ln [Ao]/[A]

∴ (1.21 x 10⁻⁴ year⁻¹)(13,750 years) = ln (100.0%)/[A]

1.664 =  ln (100.0%)/[A]

Taking exponential for both sides:

5.279 = (100.0%)/[A]

<em>∴ [A]</em> = (100.0%)/5.279 = <em>18.94%.</em>

8 0
3 years ago
Plzzzzzzzzzzzzzz answer fast
vfiekz [6]

Answer:

Welding and computer chips

8 0
2 years ago
Read 2 more answers
Which two trials could be used to measure the surface area
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Answer:

Trials A and B

Explanation:

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3 years ago
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