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ddd [48]
3 years ago
14

Fast pls..,.,,..,,.,.,.

Chemistry
2 answers:
NeX [460]3 years ago
7 0
The answer is D) gills. Gills are how fish breath.
OLga [1]3 years ago
4 0
I believe the answer is gills

Fish's use gills to breathe, so tadpoles should use gills too

hope this helps

(got the info from a documentary i watched a couple years ago)
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What is the major difference between the periodic table created by Dmitri Mendeleev and the one created by Henry Moseley?
Anettt [7]
The one created by mandeleev is not in order of increasing the atomic number
3 0
4 years ago
Positive correlation means ________________. A. as one variable increases, the other variable decreases. B. variables become unr
Softa [21]

Answer:

D. As one variable increases, the other variable also increases

8 0
4 years ago
Which of the following statements about the reaction quotient, Q is false? a. The value of Q can be used to predict equilibrium
irakobra [83]

Answer:

The correct statements are :b, c , d, and e.

Explanation:

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K_{eq}

K is the constant of a certain reaction when it is in equilibrium, while Q is the equilibrium quotient of activities of products and reactants at any stage other than equilibrium of a reaction.

  • Q_c, reaction will move in forward direction and concentration of products will increase.
  • Q_c>K_c, reaction will move in backward direction and concentration of reactant will increase.
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4 0
3 years ago
Which equation represents the reaction of a weak acid with water?
shusha [124]
Acid is anything which will give H+ to other species.

Have a look at the equations given.

In A) HCl changes to Cl- by giving its H+ to H2O. So HCl is an acid.

In B) HCO3- changes to H2CO3^2- by accepting H+. It did Not give its H+ rather it takes from other species. So it is not an acid at all.

In C) H2O is just breaking to H+ and OH-. It is not giving H+ to other species. So it is also not an acid in this reaction.

In D) HCOOH is giving its H+ to H2O. So it is also an acid.

So out of all reactions with water. The only two species are acting as acid with water namely HCl and HCOOH.

Out of these two HCl is very strong acid but HCOOH is a weak acid.

So the answer is D
6 0
3 years ago
Read 2 more answers
How many oxygen atoms are there for three molecules of glucose (3C6H1206)?
sergiy2304 [10]
In one glucose you have
6 carbon atoms
12 hydrogen atoms
6 oxygen atoms

if you have 3 then you are going to multiply the atoms by 3. 6 times 3 is 18.

you have 18 OXYGEN MOLECULES
3 0
2 years ago
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