According to the brønsted-lowry definition, in which of the following reactions does water act as an acid?
a) hc2h3o2(aq) + h2o(l) → h3o+(aq) + c2h3o2-(aq)
b) h2o(l) + no2-(aq) → hno2(aq) + oh-(aq)
c)hcl + h2o(l) → h3o+(aq) + cl-(aq)
d)h2o(l) + nh4+(aq) → h3o+(aq) + nh3(aq)

Which object forms when a supergiant runs out of fuel? a red giant a black hole a white dwarf a neutron star

How many miles of water are produced if 5.43 mol pbo2 are consumed

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.