Its what the formula of a coupon between PB to plus plus to
Mass of water = density x volume
Mass of water = 0.413 x 1
Mass of water = 0.413 g
Energy absorbed = mCpΔT
Energy = 0.413 x 4.184 x 76.5
Energy = 132.2 J
Using Planck's equation:
E = nhc/λ
132.2 = (n x 6.63 x 10⁻³⁴ x 3 x 10⁸) / (13.3 x 10⁻²)
n = 8.84 x 10²⁵ photons
18. c
19. A
20. decomposition reaction
21. 4
22. 0.04%
The formula for the molecular formula is molar mass/ empirical formula
So, the empirical formula of C3H7 is equal to C*3 + H*7 which is equal to 12*3 + 7. Then use the molecular formula = 86 / (12*3+7) = 2
Therefore, the molecular formula is 2 times the empirical formula which is C6H14.
<span>D. unsafe disposal of radioactive waste produced by a nuclear power plant</span>