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3 years ago

How to determine molecular formula based on spectroscopic data?

Chemistry

1 answer:

mart [117]3 years ago

4 0

Answer:

When trying to determine the structure of a compound based on its molecular formula, you can use NMR (nuclear magnetic resonance) and IR (infrared) spectroscopy to help you identify the fragments of the molecule. (Once you identify these fragments, you can identify the molecule’s structure.)

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What volume of "laughing gas" (N2O) will be produced from 60 g of nitrogen gas (N2) and 85 g of oxygen gas (O2)? How much of the

riadik2000 [5.3K]

Answer:

94.16g of N2O

50.88g of O2

Explanation:

O2 reacts with N2 as follows:

2N2 + O2 → 2N2O

To find moles of N2O produced we need to convert the mass of each gas to moles to find limiting reactant and the moles of N2O that could be produced:

<em>Moles N2 (Molar mass: 28g/mol):</em>

60g N2 * (1mol / 28g) = 2.14 moles N2

<em>Moles O2 (Molar mass: 32g/mol):</em>

85g O2 * (1mol / 32g) = 2.66 moles O2

For a complete reaction of 2.14 moles of N2 are needed:

2.14 mol N2 * (1mol O2 / 2 mol N2) = 1.07 moles of O2.

As there are 2.66 moles of O2, reactant in excess is O2 and will remain:

2.66 moles - 1.07 moles =

1.59 moles O2. The mass is:

1.59 moles O2 * (32g / mol) =

And there are produced:

2.14 mol N2 * (2 moles N2O / 2 moles N2) = 2.14 moles N2O.

The mass is (44g/mol for N2O):

2.14 moles N2O * (44g/mol) =

3 0

3 years ago

Which of the following is an example of a physical change?(1 point)

user100 [1]

Dissolving sugar in water

4 0

3 years ago

Read 2 more answers

What is the chemical formula of the salt produced by the neutralization of potassium hydroxide with sulfuric acid?KSO3KSO4K(SO4)

kakasveta [241]

Answer: The salt produced will be $K_{2}SO_{4}$

Explanation:

During a neutralization reaction, an acid reacts with a base for producing the correspondent salt, and water.

The strong acids release all the protons avalaible when are dissolved, such as sulfuric acid. As you can see, sulfuric acid have 2 protons ready for being released ( $H_{2}SO_{4}$ ); and those places have to be occcupied for other ions equivalents to the H+: K+ from KOH in this case.

Therefore the answer will be $K_{2}SO_{4}$ .

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3 years ago

According to the kinetic theory of gas particles, when do gas particles have some type of force between them? a) when the volume

Aloiza [94]

Answer: D

Explanation:

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3 years ago

Homologous chromosomes pair up during what phase of meiosis:

pochemuha

Answer:

prophase I

Explanation:

Homologous chromosomes pair up during prophase I of meiosis.

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3 years ago