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timofeeve [1]
3 years ago
7

What is the volume of a 3.00M(mol/L) solution made with 122g of LiF?

Chemistry
1 answer:
In-s [12.5K]3 years ago
4 0
Moles is equal to mass over molar mass

122g/25.94 (25.94 is the molar mass of LiF)

3 = (4.703/L)

L = 1.567
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A closed, nonreactive system contains species Aand Bin vapor/liquid equilibrium. Species Ais a very light gas, essentially insol
musickatia [10]

Answer:

Remain unchanged.

Explanation:

The total number of moles of liquid remain unchanged as the some moles of species B are added to the system because specie B that is added in the liquid phase is again restored after addition. If the specie B did not restored after addition to the liquid phase so the total number of moles increases in the liquid phase so that's why we can say that the liquid phase remain unchanged.

5 0
3 years ago
How does the Electoral College help to ensure that citizens in all states have a voice in the election of the
vredina [299]

Answer:

See below

Explanation:

The electoral college ensures that the most populated states can't always pick the next president.  States that have the most population would be able to skew the elections by cancelling out several other less populated state's voters.  One large city could cancel out every vote from the state of Rhode Island.

With the electoral college, each state has a given number of votes to cast for a president.  Some states can split their college votes while others cast all votes for the same candidate.

If you look at Pennsylvania in 2020 as an example, they have 20 electoral votes.  Pennsylvania does not split their votes so all go to just one candidate.  In the measurement of votes, it might show that candidate A got 51% of the votes and candidate B got 49%.  The 20 electoral votes would all go to candidate A and candidate B gets nothing.  Candidate B may have gotten millions of individual votes within the state but that no longer matters.  Candidate A won the state so gets all 20 electoral votes.  If the country went by the individual vote, Candidate B would keep all those votes he got from the 2 or 3 large cities in Pennsylvania.

It would be easy to see that if you only counted the individual votes (called the popular vote), a candidate could compile more votes from all of the states even though the candidate did not win that state by the majority vote.  The electoral college makes sure that a candidate cannot carry those votes from the state that they lost.

If elections were based on this popular vote, then most of the states with small populations would barely affect the outcome of an election.  The popularity vote would ensure that the states with the largest populated cities would always control who gets elected.

It would especially be detrimental in todays age since most large cities are almost always voting for just one party.

5 0
3 years ago
What is the energy of an electromagnetic wave with a electromagnetic wave with a frequency of 3 * 10 Hz ?
Olin [163]

Answer:

E=1.989*10^{-32}J

Explanation:

From the question we are told that:

Frequency f=3 * 10 Hz

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 E=hf

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  h=Planck's constant

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Therefore

 E=6.62607015 * 10^{-34}*3 * 10

 E=1.989*10^{-32}J

8 0
3 years ago
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