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adell [148]
1 year ago
9

Formaldehyde has a wide range of uses, many of them in manufacturing. Its chemical formula is CH₂O. The model below represents f

ormaldehyde.
Based on the model, which statement best describes formaldehyde molecules?

A. Formaldehyde molecules form an extended structure and cannot freely move past each other.

B. Formaldehyde molecules do not form an extended structure and can freely move past each other.

C. Formaldehyde molecules do not form a repeating pattern and cannot freely move past each other.

D. Formaldehyde molecules form a repeating pattern and can freely move past each other.​

Chemistry
1 answer:
Korolek [52]1 year ago
4 0

Answer: B

Explanation: Formaldehyde molecules do not form an extended structure and can freely move past each other

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Answer:

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Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

4NH3 + 5O2 → 4NO + 6H2O

Next, we shall determine the mass of NH3 and O2 that reacted from the balanced equation. This is illustrated below:

Molar mass of NH3 = 14 + (3x1) = 17g/mol

Mass of NH3 from the balanced equation = 4 x 17 = 68g

Molar Mass of O2 = 16x2 = 32g/mol

Mass of O2 from the balanced equation = 5 x 32 = 160g.

From the balanced equation above,

68g of NH3 reacted with 160g of O2.

Now, we can calculate the mass of O2 that will be required to react completely with 6.87 g of NH3. This is illustrated below:

From the balanced equation above,

68g of NH3 reacted with 160g of O2

Therefore, 6.87g of NH3 will react with = (6.87 x 160)/68 = 16.16g of O2.

Therefore, 16.16g of O2 is needed for the reaction.

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To balance this chemical equation consider the number of reactants and products on other side of the equation. If you were to include a coefficient of one - half with respect to N2 on the reactant side, it would balance the reactants and products -

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