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Gwar [14]
3 years ago
15

Pls I need help give away 11 points

Chemistry
1 answer:
Maru [420]3 years ago
7 0

Answer:

The charge is +2

Explanation:

Protons are positive, electrons are negative. 10-8=2.

+2 :)

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A particular balloon can be stretched to a maximum surface area of 1257 cm2. The balloon is filled with 3.1 L of helium gas at a
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So,  

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Using ideal gas equation as:

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where,  

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Applying the equation as:

0.9921 atm × 3.1 L = n × 0.0821 L.atm/K.mol × 294 K  

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For a sphere, Surface area = 4 × π × r² = 1257 cm²

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The volume of the sphere is :

V=\frac {4}{3}\times \pi\times r^3

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r is the radius

V=\frac {4}{3}\times \frac {22}{7}\times {10}^3

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Using ideal gas equation as:

PV=nRT

Applying the equation as:

P × 4.19 L = 0.1274 × 0.0821 L.atm/K.mol × 273 K  

<u>P = 0.6815 atm</u>

<u></u>

4 0
3 years ago
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