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2 years ago

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Why is chemistry important in the study of biology? The body is composed of chemical elements. Chemical reactions occur in the b

ody. Chemistry studies matter and energy. all of the above

2 answers:

Ede4ka [16]2 years ago

7 0

All of the above.
................
:)

11111nata11111 [884]2 years ago

6 0

All of the above.

you welcome

wish you well

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Chemicals that are able to slow or stop the reaction rate are inhibitors. reactants. products. catalysts.

erma4kov [3.2K]

Answer:inhibitors

Explanation:

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2 years ago

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The ion MnOis often used to analyze for the Fe2+ content of an aqueous solution by using the (unbalanced) reaction Mno+Fe2+ + Fe

dusya [7]

Answer:

B) 0.230 M

Explanation:

The first step is to <u>balance the reaction</u> between the Ferrous ion and the permanganate ion:

$5~Fe^+^2~+~MnO_4^-^1~+~8H^+~->~5Fe^+^3~+~Mn^+^2~+4H_2O$

Then we have to <u>calculate the moles</u> of $MnO_4^-$ :

$M~=~\frac{mol}{L}$

$mol~=~M*L$

$mol~=~0.033~M*0.0633L=~0.002088~mol~MnO_4^-$

Then using the <u>molar ratio</u> we can find the moles of $Fe^+^2$ :

$0.002088~mol~MnO_4^-\frac{5~mol~Fe^+^2}{1~mol~MnO_4^-}=0.01044~mol~Fe^+^2$

Finally we can calculate the molarity:

$M=\frac{0.01044~mol~Fe^+^2}{0.0455~L}=0.230~M$

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3 years ago

Which of the four substances listed will dissolve in water and why?

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Answer:

Sugar, sodium chloride, and hydrophilic proteins are all substances that dissolve in water. Oils, fats, and certain organic solvents do not dissolve in water because they are hydrophobic.

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3 years ago

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Answer:

Cells

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2 years ago

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Answer:

A=8, B=7,C=N

D=26, E=30, F =Fe

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