Answer:
1080 photons
Explanation:
ΔE = hc/λ => Energy per photon
h = 6.63 x 10⁻³⁴ j·s
c = 3 x 10⁸ m/s
λ= 535 nm = 5.35 x 10⁻⁷ m
ΔE/photon = (6.63 x 10⁻³⁴ j·s)(c = 3 x 10⁸ m/s)/(5.35 x 10⁻⁷ m) = 3.71 x 10⁻¹⁹ j/photon
For #photons in 4.00 x 10⁻⁷ j = (4.00 x 10⁻⁷ j) / (3.71 x 10⁻¹⁹ j/photon) = 1076 photons ≅ 1080 photons (3 sig. figs.)
I don’t know the answer but I think it would help you if you convert everything to one u n
Distilled water does not contain and minerals, but tap water does contain minerals. The minerals are the ones who conduct the electricity. That is way tap water can conduct electricity and distilled water cannot.
Answer:
The answer to your question is: 24.31 amu
Explanation:
Magnesium isotopes 1 mass 23.99 abundance 78.99%
2 mass 24.99 abundance 10.00%
3 mass 25.98 abundance 11.01 %
Atomic mass of magnesium = ((23.99x0.7899) + (24.99 x 0.10) + (25.98x0.1101)
Atomic mass of magnesium = 18.95 + 2.5 + 2.86
Atomic mass of magnesium = 24.31 amu
