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sashaice [31]
3 years ago
8

True or false: Tectonic Plates move quickly so it is difficult to notice.

Chemistry
1 answer:
olga nikolaevna [1]3 years ago
8 0

Answer:

false.

Explanation:

Tectonic plates move a few inches a year

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A helium balloon contains 16.9 L of helium at STP. How many atoms of helium are in the balloon
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4.54×10^(23) atoms He
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All organisms have the same number of cells<br>A. true<br>B. false​
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B. false is the answer of this question

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calculate the mass required to prepare 2.5 L of 1.0 M NaOH solution. Given that the molar mass for NaOH is 40 g/mol.
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Answer:

The required mass to prepare 2.5 L of 1.0 M NaOH solution is 100 g

Explanation:

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2 years ago
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Ghella [55]

Answer:

B sediment

Explanation:

The excess mileage leads to additional pollution. Car exhaust contains toxic gases, and car fluids often leak (oil drips, antifreeze leaks, etc...). The exhaust also contains nitrogen oxide, which can lead to nutrient-related problems in the environment.

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3 years ago
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The activation energy for a reaction is changed from 184 kJ/mol to 60.5 kJ/mol at 600. K by the introduction of a catalyst. If t
Ahat [919]

Answer:

The catalyzed reaction will take 1,41 s

Explanation:

The rate constant for a reaction is:

k = A e^{-\frac{Ea}{RT}}

Assuming frequency factor is the same for both reactions (with and without catalyst) it is possible to obtain:

{\frac{k1}{k2}} = e^{-\frac{Ea_{2}-Ea_{1}}{RT}}

Replacing:

{\frac{k1}{k2}} = e^{-\frac{60,5kJ/mol-184kJ/mol}{8,314472x10^{-3}kJ/molK*600k}}

{\frac{k1}{k2}} = 5,64x10^{10}

That means the reaction occurs 5,64x10¹⁰ faster than the uncatalyzed reaction, that is 2537 years / 5,64x10¹⁰ = 4,50x10⁻⁸ years. In seconds:

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I hope it helps!

6 0
3 years ago
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