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Bella1213
Answer is 1.2 x 1024 atoms. Explanation: Divide 9.03 x 1023 by 6.02 x 1023 to find the number of moles of hydrogen gas. 9.02 / 6.02 = 1.5 moles (remember the numerator and denominator each contain 10 to the 23, so this cancels out. 1 mole equals 6.02 x 1023 molecules).
carlospertuz

Answer:

The answer is 1,5 moles of H2

Explanation:

Let's start from the definition of the Avogadro's number. The Avogadro's number is 6,02 x [tex]10^{23}[/tex] and means that, for any compound, we have 6,02 x [tex]10^{23}[/tex] molecules for each mol. So, in that way, we can write the following expression:

[tex]9,03*10^{23} molecules H2* \frac{1 mol H2}{6,02 * 10^{23} molecules H2}[/tex]

The result is: 1,5 moles of H2