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3 years ago

8

How could getting so much food from the ocean negatively impact marine ecosystems?

1 answer:

kumpel [21]3 years ago

7 0

Marine food chains at risk of collapse, extensive study of world's oceans finds. ... The acidification of the ocean, where the pH of water drops as it absorbs carbon dioxide, will make it hard for creatures such as coral, oysters and mussels to form the shells and structures that sustain them.

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A solution is made by mixing of 42.g water and 77.g of acetic acid HCH3CO2. Calculate the mole fraction of water in this solutio

KengaRu [80]

Moles of $H_2O$ ,

$n_{H_2O}=\dfrac{42}{2\times 1 + 16}=\dfrac{42}{18}\\\\n_{H_2O}=2.33\ moles$

Moles of acetic acid $HCH_3CO_2$ ,

$n_{A.A}=\dfrac{77}{1 + 12 + 3 + 12 + 16\times 2}=\dfrac{77}{60}\\\\n_{A.A}=1.28\ moles$

Mole fraction of water :

$M.F_{H_2O}=\dfrac{n_{H_2O}}{n_{H_2O}+n_{A.A}}\\\\M.F_{H_2O}=\dfrac{2.33}{2.33+1.28}\\\\M.F_{H_2O}=0.645$

Therefore, mole fraction of water in this solution is 0.645 .

Hence, this is the required solution.

6 0

4 years ago

Help me with this please!

LenKa [72]

Answer:

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3 years ago

I NEED HELP NOW PLEASE<br><br> I KNOW ITS A LOT BUT I REALLY NEED HELP LIKE DESPERATELY

Montano1993 [528]

Sorry but do you have any clearer photos? Or can you leave the question below I’ll gladly help

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3 years ago

The speed of a car should be going when trying to drift is around 30 mph how fast is this in m/s

Galina-37 [17]

1 miles = 1609.344 m
1 hour = 60 min x 60 sec = 3600 s

30 miles 1 hr 1609.344 m
_______ x ______ x __________= 13.412m/s

1 hr 3600 s 1 miles

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3 years ago

Does somebody know the answer ?

Alex777 [14]

H2O is the missing reactant.

Just a caveat: this equation isn’t balanced.

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3 years ago