. the energy of shells in a hydrogen atom is calculated by the formula e = -eo/n^2 where n is any integer, and eo = 2.179x10^-18 j. so, the energy of a ground state electron in hydrogen is:
e = -2.179x10^-18 j / 1^2 = -2.179x10^-21 kj
consequently, to ionize this electron would require the input of 2.179x10^-21 kj
2. the wavelength of a photon with this energy would be:
energy = hc/wavelength
wavelength = hc/energy
wavelength = 6.626x10^-34 js (2.998x10^8 m/s) / 2.179x10^-18 j = 9.116x10^-8 m
converting to nanometers gives: 91.16 nm
3. repeat the calculation in 1, but using n=5.
4. repeat the calculation in 2 using the energy calculated in 3.
because the moon rotates on its axis at the same rate that the moon orbits the earth – a situation known as synchronous rotation, or tidal locking. the moon is directly illuminated by the sun, and the cyclically varying viewing conditions cause the lunar phases.
the answer is a. conduction
answer: amount of sugar left over after its use in recipe is 16385.12 grams.
total amount of sugar the bakery has is 30900 grams and it uses only 32 pounds of it for a recipe.
1 pound of sugar is equal to 453.59 grams.
so, 32 pounds of sugar will be equal to (32 × 453.59) = 14514.88 grams.
amount of sugar used in a recipe = 14514.88 grams.
amount of sugar left = total sugar - sugar used = (30900 - 14514.88) = 16385.12 grams.
hence, amount of sugar left over after its use in recipe is 16385.12 grams.