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Stella [2.4K]
3 years ago
9

How is chemical energy related to chemical change

Chemistry
2 answers:
Ghella [55]3 years ago
6 0
The process of changing chemical energy into another form of energy is called chemical change.
Murljashka [212]3 years ago
6 0
Actually the other person's answer is wrong, chemical energy is related to chemical change because you need chemical energy, or activation energy, to start a chemical change/reaction.

Hope this helps!
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2 years ago
What is the mass in grams of 0.280 mole sample of sodium hydroxide NaOH​
vivado [14]

Answer:

The mass of 0.280 mole sample of sodium hydroxide NaOH​ is 11.2 grams.

Explanation:

To know the mass in grams of 0.280 moles of sample of sodium hydroxide NaOH, you must know the molar mass of the compound, that is, the mass of one mole of a substance, which can be an element or a compound.

So you know:

  • Na: 23 g/mole
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So, the molar mass of NaOH is:

NaOH= 23 g/mole + 16 g/mole+ 1 g/mole= 40 g/mole

Then the following rule of three can be applied: if in 1 mole of sodium hydroxide there are 40 grams, in 0.280 moles how much mass is there?

mass=\frac{0.28 moles*40 grams}{1 mole}

mass= 11.2 grams

<u><em>The mass of 0.280 mole sample of sodium hydroxide NaOH​ is 11.2 grams.</em></u>

4 0
3 years ago
Which of the following is not a clue that a chemical reaction has taken place? *
DaniilM [7]

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