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kari74 [83]
3 years ago
5

PLEASE HELP QUICKLY

Chemistry
1 answer:
Nikolay [14]3 years ago
3 0
If is an endothermic reaction.. heat is absorbed from the surrounding.. so it is Positive(+ve).. l hope it helped???
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What is an example of the strong nuclear force?
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Here are two examples of strong nuclear force !

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Does anyone understand how to do this. it’s for AP chemistry. please help
Grace [21]

Answer:

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Explanation:

2NH3 + CO2 + HOH --> 2NH4+ + CO32-

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3 0
3 years ago
Calculate the energy of an electron that emits light at a wavelength of 5.00 x 10^-7m.
Anni [7]

Answer:

The energy of electron is 3.978×10⁻¹⁹ j.

Explanation:

Given data:

Energy of electron = ?

Wavelength of electron = 5.00 ×10⁻⁷ m

Solution:

Formula:

E = hc/λ

E = energy

h = planck's constant (6.63×10⁻³⁴ j.s)

c = speed of light

λ = wavelength

Now we will put the values in formula.

E = 6.63×10⁻³⁴ j.s × 3×10⁸ m/s / 5.00 ×10⁻⁷ m

E = 19.89×10⁻²⁶ j.m /5.00 ×10⁻⁷ m

E = 3.978×10⁻¹⁹ j

The energy of electron is 3.978×10⁻¹⁹ j.

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Convert the following Celsius temperatures to the Kelvin scales
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