Answer:
There are 6.022×1023 molecules in a mole. There are 18.01528 grams of water per mole of water. in 1g water
Explanation:
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Answer:
energy of photon=1.824ev
Explanation:
given wavelength of ligt=6.8×10⁻⁷m=6800A⁰
energy of photon(E)=hc/λ;
and for simplicity
E=12400/λ
where λ is aken in angstorm
and energy in ev
E=12400/6800ev
E=1.824ev=energy of photon
Answer:
size-humans brains are usually larger than animals, shape-some animal brains are shaped very odd, and the cerebrum-that is the part of the brain that makes us human.
A pure chemical compound is a chemical substance that is composed of a particular set of molecules or ions that are chemically bonded.