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WITCHER [35]
3 years ago
13

Meaning of black out ​

Chemistry
1 answer:
ratelena [41]3 years ago
5 0
There’s two type of black out “like passing out “ or when it dark
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The initial concentration of reactant in a first-order reaction is 0.27 M. The rate constant for the reaction is 0.75 s−1. What
e-lub [12.9K]

Answer:

≈ 0.10M

Explanation:

[A]o = 0.27M

Rate constant, k = 0.75 s−1

[A] = ?

time, t = 1.3

Integrated formular for a first order reaction is given as;

ln[A] = ln[A]o − kt

ln[A] = ln(0.27) - 0.75(1.3)

ln[A] = -1.309 - 0.975

ln[A] = -2.284

[A] = 0.1019M ≈ 0.10M

4 0
4 years ago
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Which property can be used to tell gold and pyrite apart?
zubka84 [21]

Answer:

D. Malleability

Explanation:

Gold is made up of the element Au and it is a metal.

Pyrite is iron sulfide and it is a non-metal.

  • They have very similar appearance to such an extent that pyrite is widely called the fool's gold.
  • To distinguish between the two, we simply explore their metallic properties.
  • Gold is malleable. Pyrite is not. It will crumble under pressure.
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3 years ago
Which of the following plant structures provides most of the water necessary for photosynthesis?
erica [24]

Answer:

Explanation:

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3 years ago
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What is mean by dark web? ​
yaroslaw [1]

Answer:

The Dark Web is a collection of thousands of websites that use anonymity tools like Tor and  to hide their IP address.

hope this helps

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4 years ago
What is the net force of two cars crashing if one applies a force of 500 and to the right and the other with a force of 300 and
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Answer:

200

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