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:
A
Explanation:
The nonenzymatic inversion of sucrose to glucose and fructose is carried out by heating the substance in a water bath with baking soda.
A, because it is one of only a few on the periodic table that are liquid at room temperature and normal pressure
Answer:
0.3097 moles of an nonionizing solute would need to be added.
Explanation:
Molal elevation constant =
Normal boiling point of ethanol =
Boiling of solution =
Moles of nonionizing solute = n
Mass of ethanol (solvent) = 47.84 g
Elevation boiling point:
n = 0.3097 mol
0.3097 moles of an nonionizing solute would need to be added.