Radioisotopes injected into the human body to visualize a bodily process are called OA) isotopes.
B) radionuclides.
OC) radiotracers.
D) brachytherapy

Which terms are used to identify pure substances

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?