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lawyer [7]
3 years ago
7

Which of the following is the conjugate base of phosphoric acid? *

Chemistry
1 answer:
Crazy boy [7]3 years ago
8 0

Answer:

H2PO4 is the conjugate base of phosphoric acid.

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Consider an ideal gas enclosed in a 1.00 L container at an internal pressure of 18.0 atm. Calculate the work, w , if the gas exp
Dominik [7]

Answer:

-32821.2 J (negative sign implies that work is done by the system)

Explanation:

The expression for the calculation of work done is shown below as:

w=-P\times \Delta V

Where, P is the pressure

\Delta V is the change in volume

From the question,  

\Delta V = 18.0 - 1.00 L = 18.0 L

P = 18.0 atm

w=-18.0\times18.0\ atmL

Also, 1 atmL = 101.3 J

So,  

w=-18.0\times 18.0\times 101.3\ J=-32821.2\ J (negative sign implies that work is done by the system)

6 0
3 years ago
How much energy is required to vaporize 0.5kg of water?
White raven [17]

Answer:

Explanation:

Vaporization Equation => Q = m·ΔHv

m = 0.5Kg water = 500g water

ΔHv = Heat of vaporization = 540 calories/gram

∴Q = 500g x 540cal/g = 270,000 calories x 4.184 joules/cal = 1,129,680 joules = 1130 Kilojoules (3 sig. figs.)

3 0
3 years ago
Elements in group 2 are called alkaine earthmetals what is most similar about alkaline earth metals
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What does continental drift and sea floor spreading have in common
Llana [10]

In the early 1900s, a scientist named Alfred Wegener noticed how the continents seem to fit together and developed the Theory of Continental Drift. Continental drift is the theory that continents can drift apart from one other and have done so in the past. Wegner's theory also explained why fossils of the same plant and animal species are found on both sides of the Atlantic Ocean. In addition similar types of rock and evidence of the same ancient climatic conditions are found on several continents.

Wegner hypothesized that all the separate continents of today were once joined in a single landmass that he called Pangaea.

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What is formed when two or more elements are bonded together?​
Nadusha1986 [10]

Answer:

a compound

Explanation:

a compound consists of two or more elements combined

6 0
2 years ago
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