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Dafna1 [17]
3 years ago
13

A 93-L sample of dry air is cooled from 145 oC to -22 oC at a constant pressure of 2.85 atmospheres). What is the final volume?

Chemistry
1 answer:
Aloiza [94]3 years ago
3 0

Answer: 55.84L

Explanation: Please see attachment for explanation.

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[H3O+] = 3.6 x 10-2 M
spayn [35]

Answer:

Explanation:

Hello there!

In this case, since this concentration of hydronium ions is given, we infer we may calculate that of the hydroxide ions, pH and pOH because no question was specifically given. That is why we proceed as follows:

-  pH: Here, we use this concentration to calculate the pH according to the negative logarithm:

pH=-log(3.6x10^{-2})=1.44

Which means that the solution is acidic as the pH is less than 7.

- pOH: since the pH added to the pOH is 14, we can calculate the latter as follows:

pOH=14-1.44=12.56

- Hydroxide concentration: Given the pOH, we apply the antilogarithm to calculate such concentration as shown below:

[OH^-]=10^{-pOH}=10^{12.56}=2.75x10^{-13}M

Keep in mind, this is an arbitrary solution because no question was provided.

Regards!

7 0
3 years ago
What is the volume of a gas at 50.0 celsius and 0.80 atm, if there are 0.75 moles of the gas present?
Rom4ik [11]

pv=nrt

(.80atm)(?)=(.75)( .0821atm)(50+273)

4 0
3 years ago
When electrons are filling energy levels, the lowest energy sublevels are occupied first. This is ____________.
Nimfa-mama [501]

When electrons are filling energy levels, the lowest energy sublevels are occupied first. This is Hund's rule.

Hund's rules state that:

Every orbital in a sublevel has to be singularly occupied before any other orbital is able to be doubly occupied.

All of the electrons in single occupied orbitals have to have the same spin to maximize the total spin.

4 0
3 years ago
Read 2 more answers
An auomobile can travel 40.0 miles on one gallon of gasoline.how many kilometers per liter is this?(1.61 km= 1 mi; 1L=0.246 gal)
Karo-lina-s [1.5K]
40 mi/gal * 1.61 km/mi * 0.264 gal/li 

40*1.61*0.264 

17 km/li 
7 0
3 years ago
What is an example of an initiation phase for an addition
iren [92.7K]

Answer:

H-O* + CH3-CH3 ----> H-O-CH2-CH2*

6 0
3 years ago
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