Answer:
Homogeneous mixture
Explanation:
An homogeneous mixture is a mixture in which it's constituent substances are evenly distributed throughout the mixture while an heterogeneous mixture is the mixture in which it's constituent substances vary in amount in the mixture. Examples of homogeneous mixture are blood plasma, salt solution, glucose solution and steel. Examples of heterogeneous mixture include red wine vinegar, sandy/dirty water solution and cloudy air.
I think the correct answer is false. Natural elements do reflect light. Everything around us reflects light so as the natural elements. Reflection<span> is when </span>light<span> bounces off an object. If the surface is smooth and shiny, like glass, water or polished metal, the </span>light<span> will reflect at the same angle as it hit the surface. </span>
Explanation:
It is known that atmospheric pressure is equal to 760 torr.
And, at atmospheric pressure that is, 760 torr the boiling point of pure water is 100 degree celsius.
So, calculate the boiling point of pure water at 653.7 torr as follows.
=
=
Therefore, we can conclude that the boiling point of pure water at 653.7 torr is .
Answer:
439.7nm
Explanation:
Energy of a quantum can be calculated using below formula
E=hv...........eqn(1)
But v=λ/ c .........eqn(2)
If we substitute eqn(2) into eqn(1) we have
E= hc/(λ)
Where E= energy
h= Plank's constant= 6.62607004 × 10-34 m2 kg / s
c= speed of light
c= 2.998 × 10^8 m/s
λ= wavelength= ?
But the energy was given in Kj , it must be converted to Kj/ photon for unit consistency.
Energy E= 272 kJ/mol × 1mol/6.02× 10^23
Energy= 451.83× 10^-24 Kj/ photon
E= hc/(λ)...........eqn(1)
If we make λ subject of the formula
λ= hc/E
Then substitute the values we have
λ= [(6.626 × 10^-34) × (2.998 × 10^8)]/451.83× 10^-24
λ=(0.00043965) × (1Kj/1000J) × (10^9nm/1m)
λ=439.7nm
Hence, the longest wavelength of radiation with enough energy to break carbon-sulfur bonds is 439.7nm