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adelina 88 [10]
2 years ago
15

Which of the following is a pure substance?

Chemistry
1 answer:
Mazyrski [523]2 years ago
8 0

Answer:

1. B

2. 100 C

3.  C

4. D

5. D

Explanation:

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A balloon at 25°C has 30 L. What will the balloon's volume at 35°C?
anygoal [31]

The balloon's volume at 35°C : V₂=31.01 L

<h3>Further explanation</h3>

Given

T₁ = 25°C+273 = 298 K

V₁ = 30 L

T₂ = 35 °C + 273 = 308 K

Required

The new volume (V₂)

Solution

Charles's Law  

When the gas pressure is kept constant, the gas volume is proportional to the temperature  

\tt \dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}

Input the value :

V₂=(V₁.T₂)/T₁

V₂=(30 x 308)/298

V₂=31.01 L

8 0
2 years ago
Electromagnetic radiation at its maximum wavelength is _____.
Fittoniya [83]

Answer:

Option A) Radio waves.

Explanation:

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Which of the following is an example of point-source pollution? A. Salt from roads B. Water from a sewage treatment plant C. Fer
ivanzaharov [21]

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7 0
3 years ago
Why do airbags fill evenly with gases?
Firdavs [7]

Answer:

The signal from the deceleration sensor ignites the gas-generator mixture by an electrical impulse, creating the high-temperature condition necessary for NaN3 to decompose. The nitrogen gas that is generated then fills the airbag.

basically, the nitrogen fills the bag

8 0
2 years ago
Read 2 more answers
I need help filling out nitrogen
xxMikexx [17]
For Nitrogen Atom:
Atomic Number - 7
Protons - 7
Neutrons - 8
Electrons - 7
Cation/Anion - Anion

For Nitrogen Ion:
Atomic Number - 7
Protons - 7
Neutrons - 8
Electrons - 10
Atomic Symbol - N3-
5 0
2 years ago
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