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2 years ago

What does the absorption spectrum of an atom show?

1 answer:

8 0

Absorption spectrum is a type of spectrum in electron absorbs energy from a source to go from lower energy level to higher energy level.

Material's absorption spectrum shows the fraction of incident electromagnetic radiation absorbed by the material over a range of frequencies.

An absorption spectrum is, in a sense, the opposite of an emission spectrum.

Explanation:

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Nail polish remover containing acetone was spilled in a room 7.2 m × 5.8 m × 3.9 m. Measurements indicated that 6,400 mg of acet

sergeinik [125]

Volume of room = $7.2 m \times 5.8 m \times 3.9 m$

= $162.864 m^{3}$

Now, according to conversion factor, convert 6,400 mg to micrograms

Since, 1 mg is equal to 1000 microgram.

Therefore, 6,400 mg = $6,400 \times 1000$

= 6,400,000 micrograms of acetone.

To calculate concentration of acetone, divide volume and evaporated amount of acetone in micrograms.

Thus,

Concentration of acetone = $\frac{6,400,000 microgram}{162.864 m^{3}}$

= 39296.5910 microgram per cubic meter or $3.92\times 10^{4} \mu g/m^{3}\simeq 4.0\times 10^{4} \mu g/m^{3}$

Hence, concentration of acetone is equal to $4.0\times 10^{4} \mu g/m^{3}$

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3 years ago

What happens when mercury oxide is heated?

weeeeeb [17]

It produces mercury and oxygen gas.

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3 years ago

What is the mole ratio of Fe3O4 to Fe?

sergeinik [125]

Answer:

3Fe +2O2 = Fe3O4

3 mole 1 mole

Explanation:

1mole Fe3O4 to 3 mole Fe

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3 years ago

Which class of organic compound is commonly used in fuels?

Advocard [28]

Among the choices, the best answer is alcohol. However, the most common groups of organic compounds in fuels are the alkanes and alkenes. Alcohol can also be used in fuel, especially bioethanol. Bioethanol is a common additive in fuels for motor vehicles, and is made from corn or sugar.

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3 years ago

Read 2 more answers

If 2.40 moles of gas are held at a temperature of 97.0 °C in a container with a volume of 45.0 L, what is the pressure of the ga

Rainbow [258]

PV=nRT<=> P=nRT/V=2,40*R*(273+97)/45 atm.
Calculate it. R is a number that is given, find it and use your math to solve.

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3 years ago