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gavmur [86]
2 years ago
10

The main purpose of the muscular system is to ____

Chemistry
1 answer:
vladimir2022 [97]2 years ago
3 0

Answer: B. Allow for movement

Explanation: Because the muscular system is composed of specialized cells called muscle fibers. Their predominant function is contractibility. Muscles, attached to bones or internal organs and blood vessels, are responsible for movement. Nearly all movement in the body is the result of muscle contraction. Make sure to add me as a friend!!! <3 YW!!!

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what is the balanced net ionic equation for the reaction in acidic solution of fe2+ and kmno4 (fe2+ becomes ff3+ and MnO4 become
sveticcg [70]
The balanced half reactions are
4 Fe2+   ====> 4 Fe3+  + 4 e-

<span>MnO42- + 8 H+ +  4 e- ===>  Mn2+  + 4 H2O

The net ionic equation is
4 Fe2+ + </span>MnO42- + 8 H+ ===> 4 Fe3+  + Mn2+  + 4 H2O<span />
4 0
3 years ago
Calculate the boiling point of a solution of 500.0 g of ethylene glycol (c2h6o2) dissolved in 500.0 g of water. kf = 1.86°c/m a
Bingel [31]

Answer:The boiling point of the solution is 108° C.

Explanation:

Boiling point of pure water=T=100^oC

Boiling point of water after addition of 500 g of ethylene glycol=T_f

Mass of water = 500g = 0.5 kg (1000 g = 1 kg)

\Delta T_f=K_b\times \frac{\text{Mass of ethlyene glycol}}{\text{Molar mass of ethylene glycol}}

\Delta T_f=0.512^oC/m\times \frac{500 g}{62.07 g/mol\times 0.5 kg}

\Delta T_f=8.24 ^oC

\Delta T_f=T_f-T

8.24^oC=T_f-100^oC

T_f=108.24^oC

The boiling point of the solution is 108° C.

7 0
2 years ago
Question
inessss [21]

I need help with this too:(( did u get it?

6 0
3 years ago
_________one moleculetwo moleculesone moletwo moles of H2(g) reacts with _________one moleculetwo moleculesone moletwo moles of
Arisa [49]

Answer:

The reaction between hydrogen and fluorine.

Explanation:

The balanced chemical equation of the reaction is:

H_2(g)+F_2(g)->2HF(g)

From the balanced chemical equation, it is clear that:

1 mole of H_2 gas reacts with one mole of F_2(g) and forms 2 moles of HF(g).

8 0
2 years ago
Humans are not the only animals that pollute the air.
pychu [463]

Answer:

TRUE

Explanation:

Humans and many animals are responsible for air pollution. Even natural processess such as excreting feces results in release of methane, CO2 etc which contribute to air pollution

7 0
3 years ago
Read 2 more answers
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