Which is true for a substance that releases energy?

oa. the energy release decreases the molecular motion and the kinetic energy of the substance.

b.

the energy release decreases the molecular motion but increases the kinetic energy of the substance

c. the energy release increases the molecular motion and the kinetic energy of the substance.

d.

e.

the energy release increases the molecular motion but decreases the kinetic energy of the substance.

the energy release is used only to change the state of the substance.

reset

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

solute : a solute is a substance that is dissolved in another substance is known as a solvent. it is mixed with a special mixture know as homogeneous mixture.

solvent: a solvent is a substance that dissolved a solute, which results in a solution is known as solvent.

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