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sammy [17]
4 years ago
7

If a sample of a substance contains 9.03 x 1023 representative particles, how many moles does this represent?

Chemistry
1 answer:
GaryK [48]4 years ago
5 0
I believe its 10^23 u r saying
then no. of moles= 9.03*10^23/6.02*10^23=1.5mole
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Answer:

pH = 5.47

Explanation:

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Ka = \frac{[H+][IO-]}{[HIO]} = 2.3 * 10⁻¹¹

At equilibrium:

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<u>Replacing those values in the equation for Ka and solving for x:</u>

Ka=\frac{x^2}{0.5-x}=2.3*10^{-11} \\x^2=(2.3*10^{-11})(0.5-x)\\x^2=1.15*10^{-11}-2.3*10^{-11}x\\x^2+2.3*10^{-11}x-1.15*10^{-11}=0\\x=3.39*10^{-6}

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3 years ago
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<h3>The answer is 196 g</h3>

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