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goblinko [34]
3 years ago
15

The energy of moving electrons is known as?

Chemistry
1 answer:
andrew-mc [135]3 years ago
3 0
The answer is electrical energy
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How much ch2o is needed to prepare 445 ml of a 2.65 m solution of ch2o?
worty [1.4K]

Answer: 35.4 grams

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

where,

Molality = 2.65

n= moles of solute =?

 V_s = volume of solution in ml = 445 ml

Putting in the values we get:

2.65=\frac{n\times 1000}{445ml}

n=1.18

Mass of solute in g=moles\times {\text {molar mass}}=1.18mol\times 30.02g/mol=35.4g

Thus 35.4 grams of CH_2O is needed to prepare 445 ml of a 2.65 m solution of CH_2O.

8 0
2 years ago
When a nonmetal bonds with a nonmetal it is a _ bond
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It is a covalent bond

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3 years ago
Calculate the pH of lemon juice to three significant figures, with a hydrogen ion concentration of
Airida [17]

Answer:

pH = - log [2.12 x 10^-3]

what is the log of 2.22 x 10^-3]

Take the opposite of that,

That is the pH, now, just make certain you use the correct significant figures.

Explanation:

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3 years ago
Son buenos conductores del calor pero no de electricidad, frágiles y
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Answer:

la respuesta es Metales

Explanation:

Buenos conductores del calor y la electricidad ... Los metales alcalino-térreos siempre pierden dos electrones y presentan iones con carga 

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1 point
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