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Oxana [17]
3 years ago
14

How many molecules in 2.50 moles of NH; ?

Chemistry
1 answer:
Alexus [3.1K]3 years ago
6 0
To find out how many molecules you have, you need to multiply the number of moles with Avogadros constant: 2.50 * 6.022 * 10²³ = 1.5055 * 10^24.
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If 100 ml of a 0.5 M HCI Solution is diluted with water to 1000ml, what is the new concetration?
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Answer:

0.05\ \text{M HCl}

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V_1 = Initial volume = 100 mL

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We have the relation

\dfrac{M_1}{M_2}=\dfrac{V_2}{V_1}\\\Rightarrow M_2=M_1\dfrac{V_1}{V_2}\\\Rightarrow M_2=0.5\times \dfrac{100}{1000}\\\Rightarrow M_2=0.05\ \text{M HCl}

The new concentration is 0.05\ \text{M HCl}.

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4 0
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stira [4]

Answer:

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