Physical change because the matter in the object is not chemically changing
Atomic mass is never an integer number for several reasons: The atomic mass reported on a periodic table is the weighted average of all the naturally occuring isotopes. Being an average it would be most unlikely to be a whole number. The mass of an individual atom in atomic mass units is the mass relative to carbon-12.
Answer: Humans use energy to carry out their daily activities, like moving around, working, running etc.
Explanation:
Molar mass KOH = <span>56.1056 g/mol
Number of moles:
4.0 / 56.1056 => 0.0712 moles
Therefore:
Molarity = moles / Volume
Molarity = 0.0712 / 2.0
=> 0.0356 M</span>