Answer: 4.52g of H2 will be produced
Explanation:Please see attachment for explanation
Answer:
E Indium = 4.407 x 10⁻¹⁹ J
E Thallium = 3.716 x 10⁻¹⁹ J
Explanation:
From Planck´s equation for a given wavelength, the energy is given by.
E = h ( c/ λ )
h: Planck´s constant, 6.626 x 10⁻³⁴ J·s
c: light speed, 3 x 10⁸ m/s
λ: wavelength in m
We will need first to convert the given wavelengths to m:
451.1 nm x ( 1 m/10⁹ nm ) = 4.511 x 10⁻⁷ m
535.0 nm x ( 1 m/10⁹ nm ) = 5.350 x 10⁻⁷ m
E Indium = 6.626 x 10⁻³⁴ J·s x 3x 10 ⁸ m/s/ 4.511 x 10⁻⁷ m = 4.407 x 10⁻¹⁹ J
E Thallium = 6.626 x 10⁻³⁴ J·s x 3x 10 ⁸ m/s/ 5.350 x 10⁻⁷ m = 3.716 x 10⁻¹⁹ J
Answer:
Explanation:
- from the Radioactive decay equation ; lnA = ln Ao - kt
- Ao = original amount of substance = 74mg
- where A = is the amount of the substance remaining after time t = 32.7mg,
- k = is a constant that is characteristic of the substance = 2.67 x 10^-1 years^-1
All radioactive substances follow the first order kinetics, as such the rate constant for first order is given as , k = 1/t ln[Ao/A]
- plugging the values in the equation;
- t = 1/0.267 x ln [74/32.7]
- t = 3.05years is the time needed
The process of splitting an atom into two nuclei is the nuclear fission