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mezya [45]
3 years ago
6

Qué tipo de reacciones pertenecen las combustiones?

Chemistry
1 answer:
navik [9.2K]3 years ago
5 0

Answer:

Si una reacción química libera energía, se llama reacción exotérmica. El ejemplo más común es la combustión, en la cual la energía se manifiesta en forma de calor y luz. Si, por el contrario, la reacción química requiere energía del medio para efectuarse, recibe el nombre de reacción endotérmica.

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How many peaks will you observe in the 13C spectrum of cyclohexane ?<br><br>1<br><br>3<br><br>6
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Answer:

https://www.homeworklib.com/qaa/1833940/how-many-unique-peaks-would-you-expect-to-see-in

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3 years ago
Describe the trend in electronegativity of the elements ?​
dalvyx [7]

Answer:

On the periodic table, electronegativity generally increases as you move from left to right across a period and decreases as you move down a group. As a result, the most electronegative elements are found on the top right of the periodic table, while the least electronegative elements are found on the bottom left.

Explanation:

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3 years ago
Combining 0.350 mol Fe 2 O 3 with excess carbon produced 18.9 g Fe . Fe 2 O 3 + 3 C ⟶ 2 Fe + 3 CO
lapo4ka [179]

Answer:

1. 0.338 moles of Fe

2. 0.700 moles of Fe

3. 48.3%

Explanation:

This is the reaction:

Fe₂O₃ + 3C →  2Fe + 3CO

We were told that we produce 18.9 g of Fe. Let's convert the mass to moles:

18.9 g . 1mol/ 55.85 g = 0.338 moles of Fe

Let's make a rule of three; ratio is 1:2.

1 mol of oxide can produce 2 moles of elemental iron

Then, 0.350 moles must produce (0.350 .2) / 1 = 0.700 moles of Fe

Let's determine the percent yield:

(Yield produced /Theoretical Yield) . 100 = 48.3 %

3 0
4 years ago
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How do you do d the power of magnification on a microscope
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5 0
4 years ago
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Convert 75 mL of water to gallons (show work) ​
Usimov [2.4K]

Answer:

0.01981 gallons.

Explanation:

In this problem, we need to convert 75 mL of water to gallons.

We know that, 1 gallon = 3785.41 mL

To convert 75 mL to gallons, we must use to the unitary method such that,

1 mL = (1/3785.41) gallon

So,

75\ mL=75\times \dfrac{1}{3785.41}\\\\=0.01981\ \text{gallons}

So, there are 0.01981 gallons in 75 mL of water.

5 0
4 years ago
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