The energy of photon in kJ/mol is 329kJ/mol.
Wavelength of radiation is 370nm. The frequency of given wavelength is
ν = c / λ
ν = 3×10^8 / 370×10^-9
ν = 8.11 × 10^14 s^-1
Now the energy of photon is:
E = hν
E = 6.63×10^-34 J.s/photon × 8.11×10^14s^-1
E = 5.41× 10^-19 J/photon
To find in mole
E = 5.41× 10^-19 × 6.022×10^23
E = 3.29 ×10^ 5 J/mol
So, the energy of mole of photon is equal to 329 kJ/mol.
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The target heart rate for moderate-intensity activity is 80%
Answer:
Kinetic energy = 35840 Joules
Explanation:
Given the following data;
Mass = 70kg
Velocity = 32m/s
To find the kinetic energy;
Kinetic energy can be defined as an energy possessed by an object or body due to its motion.
Mathematically, kinetic energy is given by the formula;
Where, K.E represents kinetic energy measured in Joules.
M represents mass measured in kilograms.
V represents velocity measured in metres per seconds square.
Substituting into the equation, we have;
K.E = 35840 Joules.
Therefore, the kinetic energy possessed by the cheetah is 35840 Joules.
8 meters per second. To find velocity is to divide distance by total time. so 400/50.
Ionic bond is formed due to the transfer of electrons from one atom to the other. In this bond, one atoms (the donor) loses (donates) one or more electron(s) to the other atom (the acceptor) in order for both to become stable.
Examining the choices we have, we will find that K needs to lose one electron while Br needs to gain one electron in order for both to be stable. Therefore, K loses one electron that is gained by Br.
Based on this, the bond in KBr is considered ionic.
The right choice is:
<span>K and Br </span>