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2 years ago

How do kidneys work with other body systems to maintain homeostatis

1 answer:

8 0

Kidneys filter the extra water and toxic materials in your blood (circulatory system). The help maintain homeostasis by keeping the level of toxic materials down in your body. The filtered materials are sent, with the extra water, to your bladder , where it is known as urine/ pee.

According to a website

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Is this correct? please check

Reil [10]

Answer:

A is the correct option

Explanation:

batteries have chemical energy and will convert to electricity and when reached to bulb, it emits light as electromagnetic rays

4 0

2 years ago

Need answer asap, will give brainliest!!!

Pavlova-9 [17]

Molecules consist of multiple atoms put together to create a new form.

5 0

3 years ago

There are 3 naturally occurring isotopes of hydrogen and 2

DedPeter [7]

Answer:

True

Explanation:

Hydrogen has three naturally occuring isotopes and copper has two.

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2 years ago

On the basis of the information above, a buffer with a pH = 9 can best be made by using

telo118 [61]

Answer:

D H2PO4– + HPO42–

Explanation:

The acid dissociation constant for $\mathbf{H_3PO_4 , H_2PO^{-}_4 , HPO_4^{2-}}$ are $\mathbf{7\times 10^{-3}, \ \ 8\times 10^{-8} ,\ \ 5\times 10^{-13}}$ respectively.

$\mathbf{pka (H_3PO_4) = -log (7\times 10^{-3} )=2.2}$

$\mathbf{pka (H_2PO_4^-) = -log (8\times 10^{-8} )=7.1}$

$\mathbf{pka (HPO_4^{2-}) = -log (5\times 10^{-13} )=12.3}$

The reason while option D is the best answer is that, the value of pKa for both

$\mathbf{H_2PO^{-}_4 ,\ \& \ HPO_4^{2-}}$ lies on either side of the desired pH of the buffer. This implies that one is slightly over and the other is slightly under.

Using Henderson-Hasselbach equation:

$\mathbf{pH = pKa + log \Big( \dfrac{HPO_4^{2-}}{H_2PO_4^-} \Big)}$

3 0

2 years ago

A neutral atom of helium has 2 protons and _____ electrons. (Enter a whole number.)

Mariulka [41]

Answer:

2 electrons

Explanation:

Since the atomic structure is at it's neutral state

6 0

2 years ago