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Nitella [24]
3 years ago
5

Modern atomic theory states that atoms are neutral. How is this neutrality achieved in atoms? (2 points)

Chemistry
1 answer:
leonid [27]3 years ago
8 0
I’m pretty sure the answer is that there are equal number of protons and electrons
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A 3.82L balloon filled with gas is warmed from 204.9K to 304.8 K.
likoan [24]

Given :

A 3.82L balloon filled with gas is warmed from 204.9K to 304.8 K.

To Find :

The volume of the gas after it is heated.

Solution :

Since, their is no information about pressure in the question statement let us assume that pressure is constant.

Now, we know by ideal gas equation at constant pressure :

\dfrac{V_1}{V_2} = \dfrac{T_1}{T_2}\\\\\dfrac{3.82}{V_2}= \dfrac{204.9}{304.8}\\\\V_2 = \dfrac{304.8}{204.9} \times 3.82\\\\V_2 = 5.68 \ L

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A 5.00-cm cube of magnesium has a mass of 217.501 g. What is the density of magnesiummetal?
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Answer:

d = 43.5 g/cm³

Explanation:

Given data:

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d = m/v

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v = volume

by putting values,

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Sergeu [11.5K]
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(plz anwser all questions 15 points)
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1. B, D,

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