The reaction energy (Q value) for a particular reaction is -2.4 MeV, and the reaction's threshold energy is 9.60 MeV. What is the ratio of the mass of the incident particle to the mass of the stationary target nucleus?
A) 4.0 B) 3.0 C) 0.75 D) 0.25 E) 5.0
Question 2
In a diffraction experiment, light of 600 nm wavelength produces a first-order maximum 0.350 mm from the central maximum on a distant screen.
A second monochromatic source produces a third-order maximum 0.870 mm from the central maximum when it passes through the same diffraction grating. What is the wavelength of the light from the second source?
A)
479 nm
B)
497 nm
C)
567 nm
D)
749 nm
E)
794 nm
Activation energy of a chemical reaction
The thermodynamics of protein folding depicted as a free-energy funnel
Oxyanion reaction intermediate
The oceans continue to absorb most of the excess energy trapped by greenhouse gases
Energy Transfer
How much energy is needed to heat 77.0g H2O(s) from -10.0 C to 0.0 C?