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irinina [24]
3 years ago
14

Si en un laboratorio hay 300 moles de plomo y 300 moles de plata en cual de los dos casos la masa en mayor?

Chemistry
1 answer:
docker41 [41]3 years ago
4 0

Answer:

Esto significa que la masa en las moles de plomo es mayor que en las de plata.

Explanation:

Las moles de los átomos representan la cantidad de átomos presentes. Para saber la masa de los átomos debemos convertir las moles a gramos usando el peso molecular de cada uno de los átomos (207.2g/mol para el plomo y 107.82g/mol para la plata).

La masa de plomo en 300 moles es:

300 moles * (207.2g / mol) = 62160g de plomo

Y la masa de plata es:

300 moles * (107.82g / mol) = 32346g de plata

<h3>Esto significa que la masa en las moles de plomo es mayor que en las de plata</h3>
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Answer:

The proportion of dissolved substances in seawater is usually expressed in ppm, ppb or ppt

Explanation:

The concentration of very diluted solutions should be expressed in parts per million, billion or trillion.

ppm = mass from the solute . 10⁶ / mass or volume of the solution

ppb = mass from the solute . 10⁹ / mass or volume of the solution

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ppm = mg/kg, μg/g, μg/mL → These are the units

ppb = ng/g

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3 0
3 years ago
3.
swat32

Answer:

14.7838

Explanation:

Given that;

A student uses a solution that contains 16 g of water to conduct an experiment and at the end of an hour ; the amount have decreased by 3.5%

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= 16 g ×  3.5%

= 16 *\frac{3.5}{100}

= 0.56  

After an hour; the amount have decreased by 16 - 0.56

= 15.44

after 2 hours the water decreased by another 4.25%

i.e  15.44 * \frac{ 4.25}{100}

⇒ 0.6562

after two hours , the amount would have decreased by:

= 15.44 - 0.6562

= 14.7838

3 0
3 years ago
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3 years ago
What is the correct name of the compound Mn3(PO4)2? A. manganese phosphate B. manganese(I) phosphate C. manganese(III) phosphate
Sergio039 [100]
The correct name of the compound Mn3(PO4)2 is  definitely the last option represented above <span>D. manganese(II) phosphate. I am pretty sure this answer will help you

</span><span>
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3 years ago
When a substance changes from one phase to another, which of the following occurs?
Shkiper50 [21]

Answer:

B

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The average kinetic energy of the Substance changes.

8 0
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