Answer:
Most indoor growers will want to aim for 50-70% relative humidity, although 60-80% is usually tolerable.
Explanation:
Answer:
24.3
Explanation:
I used a calculator and did 3x3x3=27 27x0.90=24.3
Answer: A) True
Explanation: The difference in energy levels in an atom is responsible for the emission of photons. Emitted photons have different energies because energy levels are discrete. The energy of a photon gives information about its frequency and subsequently, its colour.
As the two gases (Hydrogen & Helium) are distinctively different gases with different discrete energy levels in their atoms, it is logical that the frequency and colour of the emitted photons from their respective atoms would be different.
Answer:
Elements: F, Cl, Br, I, At
Explanation:
Hi there,
When you are trying to find the valence electrons for an element, look at the last number of the electron configuration.
For example, if you want to find the number of valence electrons of Carbon (C), you notice that the electron configuration is<u> 2 - 4.</u>
We know that this element has four valence electrons because the last number in its electron configuration is 4.
For your question, simply find all of the elements that have the number 7 as the last number on its electron configuration on the periodic table.
Hope this answer was helpful. Cheers.
Answer:
When things burn, it looks like they are destroyed, but during any chemical reaction no particles are created or destroyed. The atoms in fuels are simply rearranged from the reactants to the products during combustion.
Explanation:
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