Heat energy is needed for evaporation to happen.
Answer:
35
Explanation:
because it's is still the same amount even if you freeze it
The number of protons uniquely identifies the element. This is not on the periodic table. Isotopic notationincludes the atomic number and the mass number. 8 17 This isotope of oxygen has 8 protons (atomic number), 8 electrons and 9 neutrons
C1V1 =C2V2... general formula...where C is the concentration and V the volume.....
(2.5) (V1) = (0.75)(1)..
V1 = 0.3L
