Strong adhesive forces exist between glass and the water molecules.<span>
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1.9264*10^23 is the answer
Answer:
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Explanation:
The answer to this question would be: <span>B. They have a higher mass
The mass of an atom is determined by their mass number which was the sum of their protons and neutrons. Protons of an element will be same. So any isotope of an element will have the same number of proton, no isotope should have more proton. The mass is increased because some isotope has more neutrons than others, resulting in a higher mass.</span>
First let us calculate the number of moles:
number of moles = 0.500 g / (180 g / mol) = 2.78 x 10^-3
mol
From Avogadros number, we know that there are 6.022 x
10^23 molecules per mole, therefore:
number of molecules = 2.78 x 10^-3 mol * (6.022 x 10^23
molecules / mole)
<span>= 1.67 x 10^21 molecules</span>