The number of moles in 3.20 x 10² formula units of calcium iodide is 0.053 moles.
<h3>How to calculate number of moles?</h3>
The number of moles in the formula units of a substance is calculated by dividing the formula unit by Avogadro's number.
According to this question, 3.20 x 10² formula units are in calcium iodide. The number of moles is as follows:
no of moles = 3.20 x 10²² ÷ 6.02 × 10²³
no of moles = 0.53 × 10-¹
no of moles = 0.053 moles
Therefore, the number of moles in 3.20 x 10² formula units of calcium iodide is 0.053 moles.
Learn more about number of moles at: brainly.com/question/12513822
#SPJ6
Answer:
The correct answer is "4 x 10 -19 J".
Explanation:
The missing options of this question are:
9 x 10-21 J
4 x 10-20 J
4 x 10-19 J
9 x 10-19 J
The correct answer is "4 x 10-19 J".
The energy of a photon is given by the wavelength of the photon, where the lower the wavelength the higher the energy is. Therefore, photons in the infrared range have the lowest energy and photons in the ultraviolet range have the highest energy. A photon in the visible range must have an energy which is between the infrared range and the ultraviolet range. Since the maximum energy of a photon in the infrared range is 3 x 10-19 J and the minimum energy of a photon in the ultraviolet range is 5 x 10-19 J, a photon in the visible range could have an energy of 4 x 10-19 J.
The mass of one mole of H is 1.008 grams.
Answer:
Left, Left, Right, Left, Right, Right
Explanation:
Follow that order!
1/8 would remain...
(1/2 is 10 years
1/4 is 20 years
1/8 is 40 years)
Hope this helps! :)
