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svetoff [14.1K]
3 years ago
13

The law of reflection states that the angle of incidence equals the angle of reflection. Define the angle of incidence in terms

of a line normal to the surface.
Chemistry
1 answer:
mihalych1998 [28]3 years ago
3 0
Answer : According to the definition of law of refelection "<em>It is </em><span><em>the principle in which, when a ray of light or radar or pulse, is shined on a smooth surface it is reflected back from the smooth surface and the angle of reflection will be equal to the angle of incidence, also the incident ray, the reflected ray, and the normal to the surface at the point of incidence all will lie in the same plane."

</em>So we can define angle of incidence as - The angle which is formed between the incident ray and the smooth surface of substrate is called angle of incidence and the incident ray will be always intersecting at the point of normal with the reflected ray. So the normal is an imaginary line which is perpendicular to the smooth surface of the substrate which bisects the ray of incidence and forms the angle of incidence also it bisects the ray of reflection and forms angle of reflection.</span>
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Pls help ty so much!
Nitella [24]

\quad \huge \quad \quad \boxed{ \tt \:Answer }

\qquad \tt \rightarrow \:mass = 11.42 \:\: grams

____________________________________

\large \tt Solution  \: :

\qquad \tt \rightarrow \: Q = ms\Delta T

  • \textsf{Q = heat evolved/absorbed = 501 J}

  • \textsf{m = mass in gram = ?}

  • \textsf{s = specific heat = 0.45}

  • \textsf{ΔT = change in temp = 120 - 22.5 =97.5°C}

\large\textsf{Find m : }

\qquad \tt \rightarrow \: 501 = m \sdot(0.45) \sdot(97.5)

\qquad \tt \rightarrow \:  501 = m \sdot43.875

\qquad \tt \rightarrow \: m =  \dfrac{501}{43.875}

\qquad \tt \rightarrow \: m  \approx11.42 \:  \: g

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

4 0
1 year ago
For the reaction of ammonia (NH3) with oxygen (O2) to produce water and nitric oxide (NO), how many moles of water are produced
asambeis [7]

Answer:

3.3 moles of H₂O.

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

4NH₃ + 5O₂ —> 6H₂O + 4NO

From the balanced equation above,

4 moles of NH₃ reacted to produce 6 moles of H₂O.

Finally, we shall determine the number of mole of H₂O produced by the reaction of 2.2 moles of NH₃. This can be obtained as follow :

From the balanced equation above,

4 moles of NH₃ reacted to produce 6 moles of H₂O.

Therefore, 2.2 moles of NH₃ will react to produce = (2.2 × 6)/4 = 3.3 moles of H₂O.

Thus, 3.3 moles of H₂O were obtained from the reaction.

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3 years ago
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Calculate the maximum wavelength of light that will cause the photoelectric
Drupady [299]

Answer:

Explanation:

Work function of potassium = 2.29 eV = 3.67 X 10⁻¹⁹ J

So the minimum energy of photon must be equal to 3.67 X 10⁻¹⁹ J .

energy of photon of wavelength λ = hc / λ

where h = 6.67  x 10⁻³⁴

c = 3 x 10⁸

Putting the values in the equation above

6.67  x 10⁻³⁴  x  3 x 10⁸ / λ =  3.67 X 10⁻¹⁹

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= 5.452 x 10⁻⁷

= 5452 x 10⁻¹⁰ m

= 5452 A .

6 0
3 years ago
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