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kati45 [8]
2 years ago
13

Look closely at the valence electrons in all eight columns of your table from part C. Which element's location does not

Chemistry
1 answer:
maw [93]2 years ago
5 0

Answer: helium(He)

Explanation: Helium has only 2 electrons in the outermost energy level, but all of the other elements in its column have eight.

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The sea breeze is the coolest
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Balance the equation. Help please!!
Artemon [7]
<h2>Answer:</h2>

Unbalanced equation:

                                      SiO2 + CaC2 → Si + CaO + CO2

Balanced equation:

                                    5SiO2 + 2CaC2 → 5Si + 2CaO + 4CO2

<h3>Explanation:</h3>
  • The chemical equation needs to be balanced so that it follows the law of conservation of mass.
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3 years ago
Read 2 more answers
A tire at 21°c has a pressure of 0.82 atm. its temperature decreases to –3.5°c. if there is no volume change in the tire, what i
rjkz [21]

The pressure of the tyre after the temperature change is 0.89atm. Details about pressure can be found below.

<h3>How to calculate pressure?</h3>

The pressure of the tyre can be calculated using the following equation:

P1/T1 = P2/T2

Where;

  • P1 = initial pressure
  • P2 = final pressure
  • T1 = initial temperature
  • T2 = final temperature

According to this question, a tyre at 21°C (294K) has a pressure of 0.82 atm. Its temperature decreases to –3.5°C (269.5K).

0.82 × 294 = P2 × 269.5

241.08 = 269.5P2

P2 = 241.08 ÷ 269.5

P2 = 0.895atm

Therefore, the pressure of the tyre after the temperature change is 0.89atm.

Learn more about pressure at: brainly.com/question/23358029

#SPJ4

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2 years ago
Dose All plants have a vascular system of pipes that transport fluids]
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Answer:

certain types of plants (vascular plants) have a system for transporting water, minerals

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