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3 years ago

8

what is the primary function of the cells that make up the majority of cells in the muscular system

1 answer:

ANTONII [103]3 years ago

5 0

Answer:

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.

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Which procedure would best allow a scientist to observe a chemical property of hydrochloric acid (HCI) solution?

makkiz [27]

Effervescence of h2 gas will be produced which burns off a glowing split with a pop sound when hcl reacts with a base

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4 years ago

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A compounds empirical formula is H.O. If the formula mass is 34 amu what is the molecular formula?

BigorU [14]

Answer:

C

Explanation:

1. The molecule has to have a ratio of 1 hydrogen to 1 oxygen.

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2 years ago

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matrenka [14]

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3 years ago

Find [H+] of a 0.056 M hydrofluoric acid solution. Ka = 1.45 x 10-7

brilliants [131]

Answer: $[H^+]$ of 0.056 M HF solution is $8.96\times 10^{-5}$

Explanation:

$HF\rightarrow H^+F^-$

cM 0 0

$c-c\alpha$ $c\alpha$ $c\alpha$

So dissociation constant will be:

$K_a=\frac{(c\alpha)^{2}}{c-c\alpha}$

Give c= 0.056 M and $\alpha$ = ?

$K_a=1.45\times 10^{-7}$

Putting in the values we get:

$1.45\times 10^{-7}=\frac{(0.056\times \alpha)^2}{(0.056-0.056\times \alpha)}$

$(\alpha)=0.0016$

$[H^+]=c\times \alpha$

$[H^+]=0.056\times 0.0016=8.96\times 10^{-5}$

Thus $[H^+]$ of 0.056 M HF solution is $8.96\times 10^{-5}$

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3 years ago

Which of the following gases in Earth's atmosphere would you expect to find as molecules and which as individual atoms? Explain

azamat

Answer: argon

Explanation:

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3 years ago