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slava [35]
3 years ago
9

En un experimento hacemos reaccionar a una solución de acido cloridico con el metal cinc. Para ello, hemos usado, 6,5g de cinc y

gas hidrogeno. ¿Cual es la masa de gas obtenida? Urgente es para un examen
Chemistry
1 answer:
Cerrena [4.2K]3 years ago
5 0

Answer:

0.200g de gas son obtenidos

Explanation:

La reacción de ácido clorhídrico, HCl, con Zn es:

2HCl(aq) + Zn(s) → ZnCl₂(s) + H₂(g)

<em>Donde 2 moles de ácido reaccionan con 1 mol de Zn para producir una mol  de cloruro de cinc y una mol de hidrógeno (gas)</em>

Asumiendo que el ácido está en exceso, las moles de 6.5g de Zn (Masa molar: 65.38g/mol) son:

6.5g × (1mol / 65.38g) = <em>0.0994 moles de Zn</em>

Como 1 mol de Zn produce 1 mol de hidrógeno, las moles de hidrógeno son 0.0994 moles de H₂. En gramos (Masa molar H₂ = 2.01g/mol):

0.0994 moles H₂× (2.01g / mol) = <em>0.200g de gas son obtenidos</em>

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Answer:

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Explanation:

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Have a great day.

7 0
2 years ago
A 2.75 M solution is diluted to 0.706 M, if the starting volume was 0.833L, what is the new volume?
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8 0
2 years ago
How many atoms are in 5 mole of water?<br> Steps
Vladimir79 [104]

Answer: 3.01 x 10^24 atoms

Explanation:

Based on Avogadro's law:

1 mole of any substance has 6.02 x 10^23 atoms

So, 1 mole of water = 6.02 x 10^23 atoms

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To get the value of Z, cross multiply

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3 0
3 years ago
Will name brainliest!!!!!
dem82 [27]

According to sources, the most probable answer to this query is the reaction is spontaneous and will proceed without any energy input. This means that energy was produced and can result to a reaction.We appreciate your questions. Please, never hesitate to ask more in Brainly your queries. 
7 0
3 years ago
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How much calcium can be recovered from 75.0g of calcium fluoride
7nadin3 [17]

38.46g

Explanation:

Given parameters:

Mass of CaF₂ = 75.0g

Unknown:

Mass of calcium that can be recovered = ?

Solution:

This is a mass percentage problem and we need to solve it accordingly.

To solve this problem;

Find the molar mass of  CaF₂

Find the ratio between the molar mass of Ca and that of  CaF₂

Multiply by the given mass

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Mass of calcium = \frac{40}{78} x 75 = 38.46g

learn more:

Mass percentage brainly.com/question/8170905

#learnwithBrainly

3 0
3 years ago
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