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2 years ago

13

Which level of organization is formed when a group of organs work together to perform complex functions?

2 answers:

Ludmilka [50]2 years ago

5 0

Hey
I think that could be “system of organs”

Serhud [2]2 years ago

3 0

Answer:

an organ system is formed when a group of organs works together to perform complex functions. it is composed of two or more tissue types and performs a specific set of tasks for the body

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Tarnished silver can be cleaned with toothpaste. Give reason

vfiekz [6]

Toothpaste is an abrasive that contains many things, but mainly phosphates.

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3 years ago

Select the statements that describe a method which can be used to make a buffer. (A) Partially neutralize a strong acid solution

Hunter-Best [27]

Answer:

B) Add appropriate quantities of weak acid and its conjugate base to water.

C) Partially neutralize a weak acid solution by addition of a strong base.

(D) Partially neutralize a weak base solution by addition of a strong acid.

Explanation:

A buffer solution is made by a weak acid and its conjugated base or a weak base and its conjugated acid.

If you add a weak acid to water, you can adjust the pH of the buffer solution by adding a strong base.

If ypu add a weak base to water, you can adjust the pH of the buffer solution by adding a strong acid.

3 0

3 years ago

Read 2 more answers

What is the hydridization of TeBr4

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It's sp3d according to the lewis dot structure (four bonds, one lone pair).

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2 years ago

What is the volume of 1g of ice in cm3?

Amanda [17]

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Explanation:

3 0

3 years ago

Calculate e°cell for a silver-aluminum cell in which the cell reaction is al(s) + 3ag+(aq) → al3+(aq) + 3ag(s) –2.46 v 0.86 v –0

tekilochka [14]

When E° cell is an electrochemical cell which comprises of two half cells.

So,

when we have the balanced equation of this half cell :

Al3+(aq) + 3e- → Al(s) and E°1 = -1.66 V

and we have also this balanced equation of this half cell :

Ag+(aq) + e- → Ag(s) and E°2 = 0.8 V

so, we can get E° in Al(s) + 3Ag (aq) → Al3+(aq) + 3Ag(s)

when E° = E°2 - E°1

∴E° =0.8 - (-1.66)

= 2.46 V

∴ the correct answer is 2.46 V

6 0

3 years ago