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Luden [163]
4 years ago
14

A(n) 816 ml sample of hydrogen was collected over water at 21.0◦c on a day when the barometric pressure was 755 torr. what volum

e would the dry hydrogen occupy under standard conditions? the vapor pressure of water at 21.0◦c is 19.0 torr. answer in units of ml.
Chemistry
1 answer:
hammer [34]4 years ago
6 0
The correct answer is A

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A thermodynamically unfavorable reaction can become favorable when coupled to a highly ________ reaction. A thermodynamically un
amid [387]

Answer:

Ionic Exergonic

Explanation:

Exergonic reactions have negative Gibbs free energy and hence are spontaneous.

Endergonic reactions have negative Gibbs free energy and are non-spontaneous and low temperature.

Endergonic reactions require external supply of energy. But such reactions can be made spontaneous or favorable by coupling with exergonic reaction via a common intermediate.

Therefore, the correct answer is Ionic Exergonic.

6 0
4 years ago
Joe is concerned about the carbon dioxide emissions from his daily commute and the impact that it is having on global warming In
Vesna [10]

Amount of CO₂ emission per day is 11,356.23 g.

<u>Explanation:</u>

Joe travelling distance per day = 60 miles

Carbon dioxide emission per day = 20 mpg

Now we have to find the amount of carbon dioxide emitted per day by dividing the distance by the emission per day given in gallons.

Amount of Carbon dioxide emission = $\frac{distance}{emission amount}

Amount of CO₂ emission in gallons  = $\frac{ 60 miles}{20 mpg}  

                                                            = 3 gallons

Now we have to convert the gallons to grams as,

1 gallon = 3,785.41 g

3 gallons = 3 × 3785.41 g = 11,356.23 g

So the emission of CO₂ per day is 11,356.23 g.

6 0
3 years ago
Explain the large difference in boiling points between CH4 and CBr4
BaLLatris [955]

CBr4 is larger than CH4, so it has a higher London dispersion, A type of Intermolecular force. Higher force means longer time to

bring the substance to boil,Meaning a higher boil point

8 0
3 years ago
The accepted value for the molar volume of a gas is 22.4 L. Sarah's experimental data indicated that a mole of a gas had a volum
Amanda [17]

Answer:

Percent error = 12.5%

Explanation:

In a measurement you can find percent error following the formula:

Percent error = |Measured value - Accepted Value| / Acepted value * 100

Based on the data of the problem, accepted value is 22.4L and the measured Value (Value of Sara) was 19.6L.

Replacing:

Percent error = |Measured value - Accepted Value| / Acepted value * 100

Percent error = |19.6L - 22.4L| / 22.4L * 100

Percent error = |-2.8L| / 22.4L * 100

Percent error = 2.8L / 22.4L * 100

Percent error = 12.5%

3 0
3 years ago
SHOW WORK
horsena [70]
10.0gNaCl/2.0Lsolution= 5.0g/L
4 0
3 years ago
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