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2 years ago

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What is the number of moles in 500L of He gas at STP

1 answer:

kompoz [17]2 years ago

7 0

Ah, this is actually a fairly simple chemistry question.

Recall that at STP, one mole is equivalent to 22.4 L. Knowing this, all you have to do is divide 500 L by 22.4 L to find the number of moles:

500/22.4 = 22.3 mol

-T.B.

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3 years ago

Give the chemical symbol of an element in the third period (row) of the periodic table with four 3p electrons.

Ann [662]

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<u>Explanation:</u>

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2 years ago

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$\huge\mathrm{ \underline{Answer}}࿐$

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2 years ago

The pH of a vinegar solution is 4.15. What is the H3O+ concentration of the solution?

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2 years ago

Read 2 more answers

Based on periodic properties, choose the more metallic element from each of the following pairs.

dimulka [17.4K]

Answer:

Sr is the more metallic element

Bi is the more metallic element

O is the more metallic element

As is the more metallic element

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One thing should be clear; metallic character increases down the group but decreases across the period.

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This is the basis upon which decisions were made about the metallic character of each of the elements listed above.

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2 years ago