Answer:
n = 1.3 x 10¹⁸ photons
Explanation:
First we need to calculate the amount of energy released in given time:
E = Pt
where,
E = Energy = ?
P = Power = 4 mW = 0.004 W
t = time = 115 s
Therefore,
E = (0.004 W)(115 s)
E = 0.46 J
Now, this energy can be given in forms of photons as:
E = nhc/λ
where,
n = No. of photons = ?
h = Plank's Constant = 6.626 x 10⁻³⁴ J.s
c = speed of light = 3 x 10⁸ m/s
λ = wavelength of light = 5650 x 10⁻¹⁰ m
Therefore,
0.46 J = n(6.626 x 10⁻³⁴ J.s)(3 x 10⁸ m/s)/(5650 x 10⁻¹⁰ m)
n = (0.46 J)/(3.5 x 10⁻¹⁹ J)
<u>n = 1.3 x 10¹⁸ photons</u>
Answer:
12500
Explanation:
In the given question, we are told that when entering large numbers in the answer box, we should not use commas. For example, we should enter 1276400 for the number 1,276,400 instead of writing 1,276,400. Therefore, we should answer the following question by typing the numeric answer into the answer box. What is the sum of 9260 and 3240?
9260 + 3240 = 12500
To express the answer numerically to at least three significant figures, we need to make sure there is minimum of three significant figures (such as 1 2 3 etc) in the answer.
Thus, the answer is 12500 to at least three significant figures
Ba-na-na-NAAAA hehe. I think so
Answer:
The enthalpy is increased by the increased heat of the reaction.
Explanation:
In this reaction, as the transition from solid to liquid state, enthalpy increases, that is, the heat applied to change its state is greater and this increases, reaching a mayor disorder.
If the reaction increases its heat, and a liquid state passes, the enthalpy increases, therefore the disorder also and the entropy will also be increased.
Answer:
C. An Alloy
Explanation:
An alloy is made by combining two or more metallic elements
