3 years ago

What’s the name of this element and what is the reactivity?

Chemistry

1 answer:

ehidna [41]3 years ago

7 0

I know it's chlorine because it have 17 dots which means it has 17 protons but I don't know the reactivity

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What is the partial pressure of helium gas in a mixture that contains 8.00 grams of helium and 8.60 mol argon gas with a total p

Agata [3.3K]

Answer:

$P_{He}=9.06torr$

Explanation:

Hello there!

In this case, we can identify the solution to this problem via the Dalton's rule because the partial pressure of helium is given by:

$P_{He}=x_{He}P_T$

Whereas the mole fraction of helium is calculated by firstly obtaining the moles and then the mole fraction:

$n_{He}=8.00g\frac{1mol}{4.00g}=2.00mol\\\\ x_{He}=\frac{n_{He}}{n_{He}+n_{Ar}} \\\\ x_{He}=\frac{2.00mol}{2.00mol+8.60mol}\\\\x_{He}=0.189$

Then, we calculate the partial pressure as shown below:

$P_{He}=0.189 *48.0torr\\\\P_{He}=9.06torr$

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3 years ago

Which of the following may indicate that a chemical reaction has occurred?

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D, all of the above

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A gas takes up a volume of 10 liters, has a pressure of 7.5 atm, and a

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3 years ago

. What is the mass of 23.56 moles of Glucose<br> ples of Glucose - C6H1206?

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Answer:

4244.48 g to the nearest hundredth.

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