2 years ago

How many electrons will oxygen gain when it becomes an ion?

Chemistry

1 answer:

olga55 [171]2 years ago

5 0

Answer:

two electrons

Explanation:

Since every electron has a single negative charge, the addition of two electrons results in an oxygen ion with a charge of - 2

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Consider the balanced chemical reaction below. When the reaction was carried out, the calculated theoretical yield for carbon di

jeka94

Answer:

Percent Yield = 94.237%

Explanation:

CO = Carbon Dioxide = Molar Mass 28g/mol

C = Carbon = 12g/mol

O = Oxygen = 16g/mol

Theoretical yield = 93.7 grams

Actual yield = 88.3 grams

Percent yield = (actual yield /theoretical yield )x100

Percent Yield = (88.3/93.7)x100

Percent Yield = 94.237%

8 0

2 years ago

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What is the volume in liters of hydrogen gas that would be produced by the reaction of 40.0 g of Al with excess HCl at STP accor

DaniilM [7]

The volume in liters of Hydrogen gas = 49.28 L

<h3>Further explanation </h3>

The reaction equation is the chemical formula of reagents and product substances

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products

Reaction

2 Al (s) + 6 HCl (aq) → 2 AlCl₃ (aq) + 3 H₂ (g)

mol Al :

$\tt mol=\dfrac{mass}{Ar}=\dfrac{40}{27}=1.481$

mol H₂ :

$\tt \dfrac{3}{2}\times 1.481=2.2$

At STP, 1 mol =22.4 L

so the volume of hydrogen :

$\tt 2.2 \times 22.4=49.28~L$

8 0

2 years ago

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Soft of easy help plz B C A D

umka21 [38]

Answer:

Explanation:

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3 years ago

If 0.500 mol of NaN3 react what mass I'm grams of nitrogen would result

klemol [59]

Looks like 3*.5 mol of N, or 1.5*.5 N2
convert that to grams.

6 0

3 years ago

Which of these is found in the energy levels of an atom?

Paul [167]

Answer:

Electrons

Explanation:

Because the nucleas is In the middle and the Electrons surround it

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2 years ago