We measure temperature in degrees of Fahrenheit
Answer : The correct option is,
Solution :
Formula used :
where,
E = change in energy
h = Planck’s constant =
c = speed of light =
= wavelength = 2.21 m
Now put all the given values in the above formula, we get the energy of an atom.
Therefore, the energy of an atom is,
Answer:
The Greeks invented the two main components of watermills, the waterwheel and toothed gearing, and used, along with the Romans, undershot, overshot and breastshot waterwheel mills.
Explanation:
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<u>Answer:</u> The initial molarity of cation is 2.38 M
<u>Explanation:</u>
To calculate the molarity of solution, we use the equation:
We are given:
Given mass of = 46.3 g
Molar mass of = 129.6 g/mol
Volume of solution = 150 mL
Putting values in above equation, we get:
1 mole of produces 1 mole of cation and 1 mole of anion
So, molarity of cation = (1 × 2.38) = 2.38 M
Hence, the initial molarity of cation is 2.38 M
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