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olga_2 [115]
4 years ago
12

Which of the following human activities can cause eutrophication of lakes?

Chemistry
1 answer:
Lana71 [14]4 years ago
7 0

Answer: 1) Adding fertilizers to soil

Explanation: Eutrophication is the presence of excess mineral and nutrients in water bodies which result into increased plant and algal growth.

Fertilizers containing nitrogen and phosphorus are used to make soil more fertile in farming.  The overuse of fertilizers can cause these nutrients to runoff the farmer's fields and enter water bodies, thus leading to eutrophication.

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A ball was kicked by a player, the ball was stationary, then it gains a velocity of 5 m/s North. Did the ball accelerate or no?
Tomtit [17]

Answer:

yes

Explanation:

it started moving North 5 m/s

7 0
3 years ago
1. Rank the following compounds in order of decreasing acid strength using periodic trends. Rank the acids from strongest to wea
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7 0
3 years ago
What is one beneift of using scientific notation instead of regular notation
kotykmax [81]

Answer:

its shorter than a regular one

Explanation:

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8 0
3 years ago
How many atoms are there in 144g of sucrose, C12H22O11 or sugar molecules?
kati45 [8]

Answer:

2.53×10²³ atoms

Explanation:

To solve this, convert grams to moles and moles to atoms.

To convert grams to moles, use the molar mass of C₁₂H₂₂O₁₁ (342.296 g/mol).  Divide the mass by the molar mass to get moles.  Moles = 0.4207

To convert moles to atoms, use Avogadro's number (6.022×10²³ atoms/mol).  Multiply moles by Avogadro's number to get atoms.  Atoms = 2.53×10²³

8 0
3 years ago
What is the pH of a 6.7 x 10^−5 M H+ solution?
lyudmila [28]

Answer:

pH = 4.17

Explanation:

According to the molar concentration you stated, pH of the solution is: 4.17

Remember that pH = - log [H⁺]

and [H⁺] = 10^-pH

When:

pH > 7 →  Basic solution

pH = 7 → Neutral solution

pH < 7 → Acid solution

3 0
4 years ago
Read 2 more answers
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