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olasank [31]
3 years ago
15

How are elements in each group the same?

Chemistry
1 answer:
Amanda [17]3 years ago
6 0

Answer:

They share the same number of electrons in their valence subshells.

Explanation:

They have the same number of electrons on the outer shell.

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The chemical equation below is correctly balanced.
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Answer:

44.8 L of O2 will react (option D)

Explanation:

Step 1: Data given

Number of moles of SO2 = 4.00 moles

STP = Pressure = 1 atm  and temperature = 273 K

Step 2: The balanced equation

2 SO2(g) + O2(g) → 2 SO3(g)

Step 3: Calculate moles of O2

For 2 moles SO2, we need 1 mol O2 to produce 2 moles SO3

For 4.00 moles SO2 we need 4.00 / 2 = 2.00 moles O2

Step 4: Calculate volume of O2

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44.8 L of O2 will react (option D)

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