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krek1111 [17]
3 years ago
7

Which one is not a form of energy?​

Chemistry
1 answer:
yuradex [85]3 years ago
6 0

Please add you assignment.

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In 2021 the James Webb Telescope will begin operation focusing on infrared wavelengths and must be kept extremely _______.
faust18 [17]

In 2021 the James Webb Telescope will begin operation focusing on infrared wavelengths and must be kept extremely cold.

<h3>What is James Webb Telescope?</h3>

The James Webb Telescope is the most important optical telescope present in space, which is employed by astronomers to observe celestial bodies and physical phenomena in the universe.

This space telescope (James Webb Telescope) is based on the infrared wavelengths that cover a specific length of 0.57 to 28-micrometer waves and enable to observe different spectra across the Universe.

In conclusion, in 2021 the James Webb Telescope will begin operation focusing on infrared wavelengths and must be kept extremely cold.

Learn more about the James Webb Telescope here:

brainly.com/question/8962979

#SPJ1

5 0
2 years ago
On the periodic table, which groups of elemen tend to positive ions? A. Group 1 and Group 2 B. Group 16 and Group 17 C. Group an
scoundrel [369]

Answer:

Group 2

Explanation:

I hope this helps

5 0
3 years ago
Hydrogen cyanide is produced industrially from the reaction of gaseous ammonia, oxygen, and methane: 2NH3 1g2 1 3O2 1g2 1 2CH4 1
tia_tia [17]

Answer: 1687.19 g of HCN and 1124,69 g of H_2O

Explanation:

We have the following reaction:

2\ NH_3\  (g) + 3\ O_2\ (g) + 2\ CH_4\ (g) \rightarrow 2\ HCN\ (g) + 6\ H_2O\ (g)

To use it, we must convert mass to moles of reactants, by diving each mass between the molar mass of the substance:

n_{NH_3} = \frac{mass\ of\ NH_3}{molar\ mass\ of\ NH_3} = \frac{5000g}{17.031 \frac{g}{mol} }=293.58\ mol\\n_{O_2} = \frac{mass\ of\ O_2}{molar\ mass\ of\ O_2} = \frac{3000g}{31.999 \frac{g}{mol} }=93.65\ mol\\\\n_{CH_4} = \frac{mass\ of\ CH_4}{molar\ mass\ of\ CH_4} = \frac{103000g}{16.04 \frac{g}{mol} }=6421.45\ mol

Now we must identify the limiting reactant, the one that will be totally consumed in the reaction. We take the one with fewer moles and calculate how much moles of the other ones are needed to consume it all, using a rule of three:

3\ moles\ of O_2 - 2\ moles\ of NH_3 - 2\ moles\ of\ CH_4\\93.65\ moles\ of O_2 - 62.43\ moles\ of NH_3 - 62.43\ moles\ of\ CH_4

So there is enough NH_3 and CH_4 to consume the oxygen. In case there wasn´t enough of one of the other reactants, that one would be the limiting one.

Now, we can use the limiting reactant to calculate the moles of products obtained, again using a rule of three:

3\ moles\ of O_2 - 2\ moles\ of HCN - 2\ moles\ of\ H_2O\\93.65\ moles\ of O_2 - 62.43\ moles\ of HCN - 62.43\ moles\ of\ H_2O

Lastly, we can convert moles to mass by multipling by the molar mass of each substance:

m_{HCN} = moles\ of\ HCN * molar\ mass\ of\ HCN = 62.43\ moles * 27.0253 \frac{g}{mol} =1687.19\ g\\m_{H_2O} = moles\ of\ H_2O * molar\ mass\ of\ H_2O = 62.43\ moles * 18.01528 \frac{g}{mol} =1124,69\ g

8 0
3 years ago
A student made a sketch of a potential energy diagram to represent an exothermic reaction.
Montano1993 [528]

Answer:

Since heat is released for

C

3

H

8

(

g

)

+

5

O

2

(

g

)

→

3

CO

2

(

g

)

+

4

H

2

O

(

g

)

+

2219.9

kJ

,

we say that

Δ

H

∘

C

=

−

2219.9 kJ/mol propane

. We approximate that this is the change in potential energy for the reactants going to the products.

https://www.khanacademy.org/

https://www.khanacademy.org/

The above is for an endothermic reaction.

A certain feature of combustion reactions suggests that you should draw the diagram DIFFERENTLY from what you see above. How should the energy of the products compare with that of the reactants for combustion reactions?

3 0
2 years ago
Which of the following would be an example of nuclear fusion?Bombarding uranium nuclei with beta particles to produce two lighte
julsineya [31]
Nuclear fusion is the combination of two nuclei to form a heavier nucleus. Colliding hydrogen atoms to produce helium is a form of nuclear fusion.
3 0
3 years ago
Read 2 more answers
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