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3 years ago

How many moles are in 123.0g (NH4)2SO4

Chemistry

1 answer:

Luda [366]3 years ago

7 0

Here you go! There are 0.9307 moles in 123.0 g of the compound. I solved this by using a fence post method. I calculated the number of grams in one mol of (NH4)2 SO4 and got 132.16.

I did this by finding the atomic mass of each element on the periodic table (my work is in the color blue for this step)

After that, i divided the given mass by the mass of one mol of the compound.

The answer is 0.9307 moles!! I hope this helped you! :))

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What can you do to help with climate change? (Choose the 3 correct answers)

Orlov [11]

Answer:

use renewable energy hshehhdbdbdbd

Explanation:

I makes sense to pick option 2

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3 years ago

If a sample of oxygen gas originally at from 171.4 K has its temperature increased to 288.4 K and

julia-pushkina [17]

Answer:

V₂ = 0.95 L

Explanation:

Given data:

Initial temperature of gas = 171.4 K

Final temperature of gas = 288.4 K

Final volume = 1.6 L

Initial volume = ?

Solution:

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₁ = V₂T₁ /T₂

V₂ = 1.6 L × 171.4 K / 288.4 k

V₂ = 274.24 L.K / 288.4 K

V₂ = 0.95 L

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3 years ago

If you heard a new hurricane warning announced over the radio, what would it mean? A weak hurricane has been upgraded to a stron

masya89 [10]

Answer:

A tropical storm at sea has been upgraded to a hurricane.

Explanation:

Hurricane warnings are issued with respect to the conditions that may cause the commencement of a hurricane in a particular area. The warning is issued before the winds hit the tropical storm force. This helps in preparing for all the necessary precautionary steps before the storm force effects. The humans are strictly orders to evacuate the area immediately. The local officials warn the public through many means and the announcement through the radio is one of them.

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3 years ago

Forty miles above the earth's surface the temperature is 250k and the pressure is only 0.20 torr. what is the density of air at

alexira [117]

For a Forty miles above the earth's surface, the temperature at 250k and the pressure at only 0.20 torr, the density of air at this altitude is mathematically given as

d=3.732*10{-4}g/l

<h3>What is the density of air at this altitude?</h3>

Generally, the equation for the ideal gas is mathematically given as

PV=(m/mw)RT

Therefore

d=m/v

d=26,664*20/83.14*250

d=0.37152

d=3.732*10{-4}g/l

In conclusion, the density

d=3.732*10{-4}g/l