Phản ứng nào dưới đây đúng? A. CH3COOC2H5 + NaOH CH3OH + C2H5COONa.
B. CH3COOC2H5 + NaOH CH3COOH + C2H5ONa.
C. CH3COO-CH=CH2 + NaOH CH3COONa + CH3CHO.
D. CH3COOCH3 + H2O CH3COOH + CH3OH.

Which best describes how johannes kepler developed his laws of planetary motion

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature

One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.