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4 years ago

Why does Earth have a liquid water supply and Venus does not?

Chemistry

2 answers:

Brums [2.3K]4 years ago

7 0

Answer: Option B

Explanation:

Earth is a unique planet with all the conditions that favors living conditions.There are many factors present on earth that favors life on earth but it is not necessary that the other planet will also have such factors affecting life.

Earth has moderate temperature that favors water to be present in liquid state. Else the other plants have no water or have snow.

So, Earth has water and Venus has no water because of temperature.

kondor19780726 [428]4 years ago

6 0

This reason would mainly be because the "earth would have moderate temperature" as more Venus does not. When having the correct answer moderate temperature, this would allow for the water to be supplied. But, as for it not to have the correct and moderate temperature, this would then allow for it not to have to supply of water.

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B. if 6.73 g of na2co3 is dissolved in enough water to make 250. ml of solution, what is the molar concentration of sodium carbo

BARSIC [14]

Answer:- $[Na_2CO_3]=0.254M$ , $[Na^+]=0.508 M$ , $[CO_3^2^-]=0.254M$

Solution:- We are asked to calculate the molarity of sodium carbonate solution as well as the sodium and carbonate ions.

Molarity is moles of solute per liter of solution. We have been given with 6.73 grams of sodium carbonate and the volume of solution is 250.mL. Grams are converted to moles and mL are converted to L and finally the moles are divided by liters to get the molarity of sodium carbonate.

Molar mass of sodium carbonate is 105.99 gram per mol. The calculations for the molarity of sodium carbonate are shown below:

$\frac{6.73gNa_2CO_3}{250.mL}(\frac{1mol}{105.99g})(\frac{1000mL}{1L})$

= $0.254MNa_2CO_3$

So, molarity of sodium carbonate solution is 0.254 M.

sodium carbonate dissociate to give the ions as:

$Na_2CO_3(aq)\rightarrow 2Na^+(aq)+CO_3^2^-$

There is 1:2 mol ratio between sodium carbonate and sodium ion. So, the molarity of sodium ion will be two times of sodium carbonate molarity.

$[Na^+]=2(0.254M)$ = 0.508 M

There is 1:1 mol ratio between sodium carbonate and carbonate ion. So, the molarity of carbonate ion will be equal to the molarity of sodium carbonate.

$[CO_3^2^-]=0.254M$

5 0

4 years ago

What is meant by the mass percent concentration of a solution

alexira [117]

Answer:

The mass of a solute divided by the mass of a solution times 100

Explanation:

The concentration of a solution refers to how much of a solute is dissolved in an amount of solvent. To express this concentration exist different methods, the mass percent concentration is one of them and is defined as the mass of a solute divided by the mass of a solution times 100:

%m/m= (mass of a solute/mass of solution)x100

Where the mass of the solution is the sum of the mass of solute and mass of solvent.

%m/m is commonly used when you can measure the masses of both solute and solution.

I hope you find this information useful and interesting! Good luck!

7 0

3 years ago

Water-rich solutions carrying metallic salts fill cracks and form

OlgaM077 [116]

Water-rich solutions carrying metallic salts fill cracks and form veins.

8 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

The surface forces that change the surface of the earth are:

pshichka [43]

Number one victory royal yaaa

5 0

3 years ago