Me i beg you i really need
endothermic and exothermic reactions are terms describing re...
Chemistry, 16.10.2019 04:30 Christyhanes3764
Me i beg you i really need
endothermic and exothermic reactions are terms describing reactions that absorb thermal energy.
true
false
the amount of energy required to raise the temperature of a swimming pool depends on the mass of water present.
true
false
you have been given two different amounts of the same substance. if given double the amount of moles of one, the amount of heat to vaporize the substance will be halved.
true
false
according to the second law of thermodynamics, energy of the universe must always increase.
true
false
when an object releases thermal energy, the average kinetic energy of the object's molecules increases.
true
false
the gibb's free energy equation shows that it is not enough for the change in enthalpy to be negative for a reaction to be spontaneous.
true
false
according to collision theory, the greater number of effective collisions that occur between reactant particles per second, the greater the rate of reaction.
true
false
in an energy diagram for an exothermic chemical reaction, the total energy change is the difference in energy between the energy of the reactants and the energy of the products.
true
false
an increase in temperature for a reaction with a + δh will shift the equilibrium toward the products.
true
false
in calculating the equilibrium constant for a reaction, the coefficients of the chemical equation are used as exponents for the factors in the equilibrium expression.
true
false
Answers: 1
Chemistry, 22.06.2019 10:30
Skills of homo sapiens were found an excavation. the skulls were preserved because the bodies were frozen. so, these fossils are (blank) fossils.the image shows the evolution of skulls beginning 2 to 3 million years ago. based on the image, modern human skulls(blank) ape skulls.
Answers: 1
Chemistry, 22.06.2019 13:00
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.
Answers: 1
Chemistry, 22.06.2019 21:00
How many neutrons does an element have if its atomic number is 50 and its mass number is 166
Answers: 1
Computers and Technology, 17.01.2020 22:31