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2 years ago

11

Runoff from agricultural land carries chemicals from fertilizers that collect in a lake. The buildup of chemicals can eventually

cause:.

1 answer:

bagirrra123 [75]2 years ago

5 0

Answer:

what are the roles of minerals in maintaning homeostasis?

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Under what conditions do you expect hydrogen gas to deviate from ideal gas behavior? Explain your answer.

Ostrovityanka [42]

Hydrogen is a non-polar gas with very weak intermolecular forces of attraction. Hydrogen will deviate from the ideal gas behavior at high pressure.

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2 years ago

Why ozone is important to organic chemistry

Nikolay [14]

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Ozone is good in the stratosphere because it absorbs all of the most energetic ultraviolet radiation (UV-C), most of the UV-B radiation and some of the least energetic UV radiation (UV-A). Ozone is “bad” in the troposphere because it is harmful to breathe and is the primary component of smog in summer.

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3 years ago

Explain why we must balance all chemical equations

enyata [817]

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The chemical equation needs to be balanced so that it follows the law of conservation of mass.

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3 years ago

Read 2 more answers

Nitrogen effuses through a pinhole 1.7 times as fast as another gaseous element under the same conditions. Estimate the other el

marysya [2.9K]

Answer:

80.92, Krypton

Explanation:

<u>What is effusion?</u>

• It is a process where gas escapes through a pinhole (a very small hole) into a region of low pressure or vacuum

<u>Graham's law of effusion of </u><u>gas</u>

• states that at a given constant temperature and pressure, the rate of effusion of gases is inversely proportional to the square root of their molar masses

$\boxed{ \frac{Rate_1}{Rate_2} = \sqrt{ \frac{M_2}{M_1} } }$

<u>Calculations</u>

Nitrogen exist as N₂ at room temperature, thus its molar mass is 2(14)= 28.

Let the rate and molar mass of unknown gas be Rate₂ and M₂ respectively.

Since N₂ effuses 1.7 times as fast as the unknown gas,

Rate₁= 1.7(Rate₂)

$\frac{Rate_1}{Rate_2} = 1.7$

$1. 7 = \sqrt{ \frac{M_2}{28} }$

Square both sides:

$2.89 = \frac{M_2}{28}$

Multiply both sides by 28:

2.89(28)= M₂

M₂= 80.92

<u>Identity of </u><u>gas</u>

The molar mass of 80.92 lies between Bromine and Krypton. However since Bromine exist as Br₂, the value of it's molar mass would be 159.8 instead. Hence, Bromine is eliminated.

If the gas is a diatomic element, the atomic weight is 80.92 ÷2= 40.46. Thus, we are now considering if Argon could be its identity. However, Argon is a noble gas and will not exist as a diatomic element. Argon is therefore eliminated too.

Thus based on the above reasoning, its probable identity is Krypton.

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2 years ago

Reaction of phenol with 1,2-epoxypropane in aqueous sodium hydroxide at 150°C gives a single product, C9H12O2. in 90% yield. Sug

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Answer: 2-Benzyloxyethanol is produced reaction in the fig. below.

Explanation:

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3 years ago