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LekaFEV [45]
2 years ago
13

If aluminum has a mass of 22.3 g, how many liters of oxygen gas are required at STP?

Chemistry
1 answer:
IceJOKER [234]2 years ago
6 0

Answer:

27.8

Explanation:

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Find the molar mass of this
kirill115 [55]

Explanation:

Given problem:

Find the molar mass of:

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Solution:

The molar mass of a compound is the mass in grams of one mole of the substance.

To solve this, we are going to add the individual atomic masses of the elements in the compound;

  Atomic mass;

       S = 32g/mol; O = 16g/mol; C = 12g/mol and H = 1g/mol

For  SO₃;

     = 32 + 3(16)

     = 32 + 48

     = 80g/mol

For C₁₀H₈

      = 10(12) + 8(1)

      = 120 + 8

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2 years ago
Boron (B) has two isotopes, boron-10 and boron-11. The atomic weight of boron is ?
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Answer:

Approximately 10,5

Explanation:

The question is not really very specific, because it would need the percentages of those isotopes in the nature. As they are not shown, it should be the median of those two numbers.

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If you check a periodic table, you'll see it's actually 10,8, but that's because of the thing I told you at first (percentages missing).

Hope I could help.

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H2CO3(aq) → CO2(aq) + H2O(l) After strenuous exercise, you breathe heavily, exhaling and removing CO2 from your body. The remova
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Explanation:

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Of these non-metals which one is likely to be least reactive
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