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Anika [276]
3 years ago
5

Which example describes how the water cycle carries on energy transfer? a flooding river depositing silt on a floodplain a warm

ocean current warming the air above it ocean water depositing sand particles on a shore water seeping through the soil and dissolving salts
Chemistry
2 answers:
castortr0y [4]3 years ago
7 0
I would say the 2nd option but I might be wrong.
Irina18 [472]3 years ago
5 0

Answer:

The water cycle is driven primarily by the energy from the sun. This solar energy drives the cycle by evaporating water from the oceans, lakes, rivers, and even the soil. Other water moves from plants to the atmosphere through the process of transpiration.

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How many molecules of oxygen are produced when a sample of 38.9 g of water is decomposed by electricity?
statuscvo [17]

Answer:

A) 6.5\times 10^{23}\ \text{molecules}

Explanation:

m = Mass of water = 38.9

M = Molar mass of water = 18 g/mol

N_A = Avogadro's number = 6.022\times 10^{23}\ \text{mol}^{-1}

The reaction of electrolysis would be

2H_2O(l)\rightarrow 2H_2(g)+O_2(g)

Number of moles of H_2O

n=\dfrac{m}{M}\\\Rightarrow n=\dfrac{38.9}{18}\ \text{mol}

From the reaction it can be seen that 2 moles of H_2O gives 1 mole of O_2

So, number of moles of O_2 produced is

\dfrac{38.9}{18}\times \dfrac{1}{2}=1.081\ \text{mol}

Number of molecules

1.081N_A=1.081\times 6.022\times 10^{23}\\ =6.5\times 10^{23}

So, 6.5\times 10^{23}\ \text{molecules} of oxygen is produced.

8 0
3 years ago
Will mark brainliest. What is the main function of the circulatory system in multicellular organisms?
just olya [345]

Answer:

D: to transport materials through the body.

Explanation:

A: to bring oxygen into the lung. is incorrect because it's respiratory system

B: to put carbon dioxide into all the blood vessels carbon dioxide is exhaled out of the body

C: to expel waste products from the body. is excretory system

4 0
3 years ago
On a balance, you have beakers of AgNO3AgNO3 solution and NaClNaCl solution. When mixed, they will form AgCl(s)AgCl(s). What wil
statuscvo [17]

Explanation:

According to the law of conservation of mass, mass can neither be created nor it can be destroyed. But it can be simply transformed from one form to another.

Therefore, when AgNO_{3} is added to NaCl then the compound formed will have same mass as that of reactants.

       AgNO_{3} + NaCl \rightarrow AgCl + NaNO_{3}

Total mass of reactants is (169.87 + 58.44) g/mol = 228.31 g/mol

Total mass of products is (143.32 + 84.99) g/mol = 228.31 g/mol

Thus, we can conclude that mass of the new mixture will stay the same.

6 0
3 years ago
The reaction of iron ore with carbon follows the equation: 2 Fe2O3 + 3 C 4 Fe + 3 CO2.
ale4655 [162]

Answer:

The person writes a coefficient of 2 in front of Fe2O3 but then writes a 4 for the number of iron (Fe) atoms. Explain this difference.

Explanation:

4 0
3 years ago
Which of the following atoms has 4 valence electrons
Mars2501 [29]
Can you show me the atoms please? I would be able to help.
5 0
3 years ago
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