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Galina-37 [17]
3 years ago
5

Which term refers to the process by which land is worn away by natural forces or human activity

Chemistry
2 answers:
Phoenix [80]3 years ago
8 0

Answer:

A- erosion

Explanation:

Erosion occurs when water, wind, or ice removes soil and rock and deposits it in a new area.

Occurs naturally, but is also impacted by human activity.

Caused by farming, deforestation, and building roads and cities.

Juliette [100K]3 years ago
5 0

Answer:

The answer is A. Erosion

Explanation:

Took the quiz

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Licemer1 [7]

Answer:

602200000000000000000000

Explanation:

move the decimal place over 23 places to the right

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The area surrounding the nucleus is called: protons electrons neutrons electron cloud
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eletrons

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what is the percent yield of NaCl if 31.0 g of CuCl reacts with excess NaNo3 to produce 21.2 g of NaCl
olchik [2.2K]
Percentage Yield = (Actual Yield ÷ Theoretical Yield) × 100  

The Actual Yield is given in the question as 21.2 g of NaCl.  However, in order to find the theoretical yield, you have to write a balanced equation and use the mole ratio to calculate the mass of NaCl that would be produced.

Balanced Equation:   CuCl + NaNO₃    →    NaCl + CuNO₃

Moles of CuCl = Mass of CuCl ÷ Molar Mass of CuCl
                         =  31.0 g ÷ (63.5 + 35.5)g/mol
                         = 0.31 mol

the mole ratio of CuCl to NaCl is 1  :  1,
∴ if moles of CuCl = 0.31  mol,

then moles of NaCl = 0.31 mol

Now, Mass of NaCl = Moles of NaCl × Molar Mass of NaCl
                                 =  0.31 mol × (23 + 35.5) g/mol
                                 =  18.32 g

⇒ the THEORETICAL Yield of NaCl, in this case, is 18.32 g.

Now, since Percentage Yield = (Actual Yield ÷ Theoretical Yield) × 100  

⇒ Percentage Yield of NaCl = (21.2g ÷ 18.32g) × 100  
                                                = 115.7 %


NOTE: Typically, the percentage yield of a reaction is less than 100%, however in a case where the mass of the substance is weighed with impurities, then that mass may be in excess of 100% as seen here.
4 0
3 years ago
Gases in the atmosphere that trap solar energy
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Answer:

d

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I can't help you otherwise

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