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MakcuM [25]
2 years ago
8

Mammals use their lungs to provide oxygen for themselves from the air. Fish spend a majority of their time in the water, and ins

tead, developed gills. What is the function of gills? *
Answer please

Chemistry
2 answers:
Juliette [100K]2 years ago
8 0
C. They use gills to separate the oxygen from water to breathe
damaskus [11]2 years ago
3 0

Answer:

Respiration.

Explanation:

Gills help the fish in carrying out their respiration

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What are the two parts of the third Step?
spin [16.1K]

Answer:

A

Explanation:

7 0
2 years ago
Read 2 more answers
On the following chemical equation, label the acid, the base, the
beks73 [17]

Answer:

HX (aq)    +     H₂O (l)  ⇄      H₃O⁺ (aq)    +     X⁻ (aq)  

Acid                  Base          Conj. acid          Conj. base  

Explanation:

The equation is:

HX (aq) + H₂O (l)  ⇄   H₃O⁺ (aq) + X⁻ (aq)

This is the typical equilibrium for a weak acid. It would complete if we notice the Ka.

HX (aq) + H₂O (l)  ⇄   H₃O⁺ (aq) + X⁻ (aq)    Ka

1 mol of hypothetic HX acid react to 1 mol of water in order to release a proton and make hydronium and generate the X⁻ anion.

HX will be the acid, in this case a weak one and water will be the base. Water is able to accept a proton to make itslef hydronium

Hydronium is the conjugate acid.

The X⁻ will be the conjugate strong base.

This ion can generate the acid form again, that's why it is strong, because it can make hydrolisis.

X⁻ (aq)  +  H₂O (l)  ⇄  HX (aq) +  OH⁻(aq)     Kb

In this case, the anion will be the conjugate base which it takes a proton from water (acid form) to make a conjugate acid, the HX and a conjugate base, OH⁻

3 0
3 years ago
Balance the following chemical reaction. ____NaOH+____H2SO4 → ___Na2SO4+____H2O
kobusy [5.1K]
The balanced equation would be 2NaOH + H2SO4 → Na2SO4 + 2H2O
7 0
2 years ago
What don’t animal cells Need chloroplasts
yulyashka [42]

Answer:

Animals do not photosynthesize.

Explanation:

Plants use chloroplasts to capture sunlight to convert to energy in order to photosynthesize. Animals do not do this, therefore it is not needed.

8 0
2 years ago
You have a 100 ml stock solution of 100 mg/ml ampicillin in deionized water. You want to make 30 ml of 25 mg/ml ampicillin in de
Georgia [21]

Explanation:

Volume of the stock solution is V_{1} = ?

Initial concentration of ampicillin is M_{1} = 100 mg/ml

Final volume (V_{2}) = 30 ml

Final concentration of  ampicillin (M_{2}) = 25 mg/ml

Therefore, calculate the volume of given stock as follows.

              M_{1} \times V_{1} = M_{2} \times V_{2}

Now, putting the given values into the above formula as follows.

            M_{1} \times V_{1} = M_{2} \times V_{2}

            100 mg/ml \times V_{1} = 25 g/ml \times 30 ml    

                   V_{1} = 7.5 ml

Now, we will calculate the volume of water added into it as follows.

            Volume of water added = V_{2} - V_{1}

                                                  = 30 ml - 7.5 ml

                                                  = 22.5 ml

Thus, we can conclude that required solution is 22.5 ml of deionized water.

3 0
2 years ago
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