power = work/time
watt = joule/sec
a) power = 0.10 watt = 0.1joules/sec
work = power * time
= 0.10 * 1 =0.1joules
work is northing but energy
therefore energy is 0.1joules
according to planks quantum theory E = nhν where nis the no. of photons ; h is planks constant; ν isfrequency
hence, n = E/hν
or n = Eλ/hc (ν = c/λ)
n = (0.1*700*10^-9)/6.625*10^-34*3*10^8 = 0.3522*10^18photons
b) similar to the above calculation
here E = 1.0joules
n = (1.0*700*10^-9)/6.625*10^-34*3*10^8 = 0.3522*10^17photons
Answer:
The Gibbs free energy is -2997.83 kJ mol-1.
Explanation:
The change in Gibbs free energy of the reaction can be calculated using the formula.
WHere R = Gas constant = 8.314KJ/Kmol
T = the temperature of the reaction in Kelvin = (37.0 + 273) = 310K
K = Raio of molar concentration of the two reactants = 1.6/0.5 = 3.2
Therefore,
Therefore the Gibbs free energy is -2997.83 kJ mol-1.
The negative sign indicates that the reaction is spontaneous.
We are requested to decide the warmth radiated in the response. Warmth emitted is resolved through the condition triangleH = mCp triangleT where m is the mass, Cp is the particular warmth and triangleT is the temperature contrast. Substituting, triangleH = 120 g (4.184 j/g •°c) (29.2°c). Heat given off is equal to 14.66 kJ or 14.7 rounded
Answer: C) Is less than 7.0
Explanation:
For a strong acid and weak base titration, pH < 7
For a strong acid and strong base titration pH = 7
For a strong base and weak acid titration pH > 7