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soldi70 [24.7K]
2 years ago
10

Would the plastic have a positive charge, negative charge, or no charge? *

Chemistry
1 answer:
HACTEHA [7]2 years ago
7 0

Answer:

Then, when students pulled the plastic through their fingers, electrons from their skin got onto the plastic. Since the plastic has more electrons than protons, it has a negative charge.

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How many eggs are present in one mole of eggs?
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602000000000000000000000

Explanation:

There are 602000000000000000000000 eggs present in one mole of eggs.

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In the molecule Br2, how many bonds would be present between the two atoms of Br
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The correct answer is A) single

Explanation:

In the case of the Bromo atom, it requires 1 electron to complete its octet, therefore it shares 1 electron with the other Bromo atom.

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To convert liters of CO2 to moles of CO2, what conversion factor would it be?
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22.4L.

This is because the standard conversion factor for Liters is 22.4 and in the question it explicitly states liters of CO2.

Therefore, in order to convert Liters of CO2 to Moles of CO2, you'd need to use the conversion factor of 22.4.

Hope this helps!

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3 years ago
Two examples of decomposers​
Eddi Din [679]

Fungi and bacteria-- mushrooms, bacteria, mold...

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Chromium has four naturally occuring isotopes. Cr-50 (mass of 49.946 amu and 4.35% abundance); Cr-52 (mass of 51.941 amu and 83.
Lemur [1.5K]

Answer:

B) 52.000 amu.

Explanation:

  • An element can have differing numbers of neutrons in its nucleus, but it always has the same number of protons. The versions of an element with different neutrons have different masses and are called isotopes.
  • The average atomic mass for an element is calculated by summing the masses of the element’s isotopes, each multiplied by its natural abundance on Earth.
  • Average atomic mass of P = ∑(Isotope mass)(its abundance)

<em>∴ Average atomic mass of Cr = (Cr-50 mass)(its abundance) + (Cr-52 mass)(its abundance) + (Cr-53 mass)(its abundance) + (Cr-54 mass)(its abundance) </em>

Abundance of isotope = % of the isotope / 100.

<em>∴ Average atomic mass of Cr =</em> (49.946 amu)(0.0435) + (51.941 amu)(0.8379) + (52.941 amu)(0.095) + (53.939 amu)(0.0236) = <em>52.000 amu.</em>

<em>So, the right choice is: </em><em>B) 52.000 amu.</em>

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