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MaRussiya [10]
3 years ago
7

How many grams of O2(g) are needed to completely burn 15.6 g of C3H8(g)?

Chemistry
1 answer:
alexdok [17]3 years ago
7 0
15.6gC3H8*44.1gC3H8*32gO2=11.32
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Which salt is produced when copper oxide reacts with hydrochloric acid?
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Which of the following is an acid-base neutralization reaction? (1 point)
GuDViN [60]
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6 0
3 years ago
Which gas below has the largest number of moles at STP?
ArbitrLikvidat [17]

Answer:

a.) 22.4 L Ne.

Explanation:

It is known that every 1.0 mol of any gas occupies 22.4 L.

For the options:

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<em>It represents </em><em>1.0 mol of Ne.</em>

<em />

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using cross multiplication:

1.0 mol occupies → 22.4 L.

??? mol occupies → 20 L.

The no. of moles of (20 L) Ar = (1.0 mol)(20 L)/(22.4 L) = 0.8929 mol.

  • 2.24 L Xe:

using cross multiplication:

1.0 mol occupies → 22.4 L.

??? mol occupies → 2.24 L.

<em>The no. of moles of (2.24 L) Xe </em>= (1.0 mol)(2.24 L)/(22.4 L) = <em>0.1 mol.</em>

  • So, the gas that has the largest number of moles at STP is: a.) 22.4 L Ne.

6 0
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Which one of the following ions would be negatively charged with a charge of -2?
stiv31 [10]

Answer:

10 electrons 8 protons

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