Use photomath. I would really recommend it! Hope this helps!
So multiply number of moles x number of atoms/mole = 1.8066 x 10^24 atoms of H2. One mole of any gas at STP has a volume of 22.4 L. So first determine the number of moles of gas you have.
for example do 7
that 's what I think
Ans: As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit will <u>increase.</u>
The energy (E) is related to the frequency (ν) by the following equation:
E = hν
where h = planck's constant
The change in energy i between levels is:
ΔΕ = h(Δν) -----(1)
Based on the above equation, as the changes in energy levels increase, the frequency of emitted radiation will also increase.
Answer:
the sun Solar energy
Explanation:
Energy from the sun. Solar energy is the original source of most energy on Earth. There are many ways we use energy from the Sun.
It says it will never change. So whatever it was before the change, it will be the same after the change. So, 200 should be correct.
