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MAXImum [283]
2 years ago
6

1. What is the purpose of the advertisement?​

Chemistry
2 answers:
ASHA 777 [7]2 years ago
6 0

Answer:

For enlightenment, development and making people understand the usefulness of the product

sveta [45]2 years ago
5 0

Answer:

AKA "AD"AND ADS EXPLAIN WAYS IN WHICH THE PRODUCT IS USEFUL ... PLEASE MARK ME AS BRAINLIST

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What does it mean for energy to be conserved
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Answer: It means that the energy is being stored or preserved to be used at a later time.

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6 0
2 years ago
Define motion of particles in matter
Wittaler [7]

Answer:

Explanation:

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5 0
3 years ago
A monoprotic weak acid when dissolved in water is 0.66% dissociated and produces a solution with a pH of 3.04. Calculate the Ka
raketka [301]

Answer:

Ka = 6.02x10⁻⁶

Explanation:

The equilibrium that takes place is:

  • HA ⇄ H⁺ + A⁻
  • Ka = [H⁺][A⁻]/[HA]

We <u>calculate [H⁺] from the pH</u>:

  • pH = -log[H⁺]
  • [H⁺] = 10^{-pH}
  • [H⁺] = 9.12x10⁻⁴ M

Keep in mind that [H⁺]=[A⁻].

As for [HA], we know the acid is 0.66% dissociated, in other words:

  • [HA] * 0.66/100 = [H⁺]

We <u>calculate [HA]</u>:

  • [HA] = 0.138 M

Finally we <u>calculate the Ka</u>:

  • Ka = \frac{[9.12x10^{-4}]*[9.12x10^{-4}]}{[0.138]} = 6.02x10⁻⁶
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2 years ago
The complete orbital notation diagram of an atom is shown.
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