4 years ago

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

1 answer:

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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what is the specific heat of a substance that has a mass of 35.0 g and requires 625.0 calories to raise its temperature by 25.0C

Anon25 [30]

We know that
Q=m.s.t, where Q= Heat, s= Specific heat of the substance, t=temperature(Difference in temperatures)
=>s= Q/m.t
=>s=525/(25X15)
=>s=525/375
=>s=1.4 cal/g/0c
Specific heat of the substance is 1.4 cal/g/0c.

6 0

3 years ago

Carbon returns to the atmosphere in the form of Co2 when _____

evablogger [386]

The process of respration happens.carbon moves from fossil fuels to the atmosphere when fuels are burned.when humans burn fossil fuels to power factories, power plants,ect.basically it enters as carbon dioxide gas.btw ask you teacher of this is correct.I don't want you to get it wrong.

8 0

3 years ago

What are the products of the<br> alkali metals in a reaction with:<br> oxygen, water, halogen?

slava [35]

Answer:

Using The element calcium Ca, we have

CaO

CaOH

CaCl

Explanation:

8 0

3 years ago

Read 2 more answers

Using the balanced chemical equation, determine the

guapka [62]

Answer:

5.02 mol

Explanation:

n(Al) : n(Cl)

2 : 3

x : 7.53

3x = 15.06

n(Al) = 5.02mol

8 0

2 years ago

Which of these

Law Incorporation [45]

Answer:

Water is called the UNIVERSAL SOLVENT

Explanation:

because it is capable of dissolving more substances than any other liquid. this is because of its composition and physical attributes.

Hope this helped.

5 0

3 years ago