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Diano4ka-milaya [45]
3 years ago
14

Please help fast. I will give brainliest.

Chemistry
1 answer:
Sonbull [250]3 years ago
5 0

Answer:39 min

Explanation:

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Does anyone know the answer to this chemistry question?!?
Pepsi [2]

Answer:

Mass of HCl = 73 g

Explanation:

Given data:

Mass of hydrogen = 2 g

Mass of HCl = ?

Solution:

First of all we will write the balance chemical equation:

H₂ + Cl₂   →  2HCl

Number of moles of hydrogen = 2 g/ 2g/mol

Number of moles of hydrogen = 1 mol

Form balanced chemical equation compare the moles hydrogen with HCl.

                   H₂    :   HCl

                    1      :    2

Mass of HCl:

Mass of HCl = number of moles × molar mass

Mass of HCl = 2 mol × 36.5 g/mol

Mass of HCl = 73 g

7 0
4 years ago
6. Para dos átomos que llamaremos x e y, justifica (en al menos dos
lesantik [10]

La primera instrucción es verdadera, la segunda es falsa porque dos elementos no pueden tener el mismo número de masa (excepto azufre y argón) Estrictamente hablando, No. Puede tener 2 (o más) elementos con el mismo 'número de masa atómica', lo que significa que el número total de nucleones (neutrones de protones) es el mismo. En el ejemplo dado en una respuesta anterior, el azufre tiene un isótopo con el número de masa atómica 36 (16p 20n) y Argón también tiene un 36 (18p 18n). La tercera declaración es verdadera, si tiene un número diferente de neutrones, entonces es un isótopo. La cuarta declaración es falso. Espero que esto te ayude.

5 0
3 years ago
Arrange the following measurements, in seconds, from the greatest bias to the least bias. 6.63 ± 0.01 s, 6.6 ± 0.1 s, 6.52 ± 0.0
lord [1]
I understand here "bias" to be the uncertainty of measurements. So the order will be the following:

6.4 ± 0.5 s
<span>6.6 ± 0.1 s,
</span><span>6.63 ± 0.01 s,
</span><span>6.52 ± 0.05 s,
</span>
(notice how the second number, the one behind the symbol ± gets smaller, as the bias gets smaller). 



6 0
4 years ago
Please fill it out and the questions below if you can.
Crank
One two two three one
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3 years ago
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One of the ingredients used to make bread is yeast, a type of microorganism. This may seem odd, to use a microorganism as an ing
Shalnov [3]

The answer would be B.

4 0
3 years ago
Read 2 more answers
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