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Verdich [7]
3 years ago
14

Understanding chemistry is important for all citizens, particularly people who wish to become political leaders one day

Chemistry
2 answers:
V125BC [204]3 years ago
4 0
Yes and no because it's important for a citizen to have a grasp on chemistry but you do not need it to be a politician
drek231 [11]3 years ago
3 0

Answer:

False

Explanation:

When it comes to deciding a political stance science is not as important as morals and public opinion so a grasp of chemistry is not important and for all citizens this is also unimportant tell me this how many times have your parents needed to know chemistry recently unless they are a scientist?

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What mass of ch4 is consumed when 587. 9 kj of energy is evolved from the combustion of a mixture of ch4(g) and o2(g)? show the
Juliette [100K]

The mass of CH₄ that is consumed is 10.598 g.

<h3>What is enthalpy?</h3>

The enthalpy of a system is defined as the sum of the internal energy of a system and the energy that is produced due to its pressure and volume.

It is given by

H = U+PV

The following reaction takes place during the combustion of CH₄

CH_4(g)+2O_2(g)\rightarrow CO_2(g)+2H_2O(g)

Energy evolved during the combustion, E = 587.9 kJ

Enthalpy of combustion of methane, ∆H = 890.3 kJ

No of moles of CH_4 =\frac{energy evolved}{enthalpy of combustion}

= 587.9 /890

Mass of CH₄  that is consumed = no of moles × molar mass of CH₄

  = 587.9 /890 × 16

   = 10.598 g

The mass of CH₄  which is consumed is 10.598 g

Learn more about enthalpy:

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6 0
1 year ago
Which statement best describes the pH of pure water? It is neutral because the concentration of hydronium ions equals that of hy
stira [4]

The pH of pure water has been best described as neutral pH with equal hydronium and hydroxide ions. Thus, option A is correct.

pH has been described as the measurement of hydrogen ions in a solution. The pH has been measured on a scale of 1-14. pH 7 has been the neutral pH.

The higher hydronium ion concentration tends to move the pH from 7 towards 1. The higher hydroxide ion concentration tends to move the pH above 7.

The neutral pH has been neither acidic nor basic with the equal constituents of hydronium and hydroxide ion in the solution.

Thus, the pH of pure water has been 7. It has neutral pH with equal hydronium and hydroxide ions. Thus, option A is correct.

For more information about the pH of the solution, refer to the link:

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IceJOKER [234]

Answer:

Hey mate....

Explanation:

This is ur answer.....

<h2>Solar radiation can be converted either into thermal energy (heat) or into electrical energy.</h2>

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Answer:

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Explanation:

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