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3 years ago

Th muscular system and the skeletal system of work together so the body can______.

Chemistry

2 answers:

MA_775_DIABLO [31]3 years ago

7 0

The answer is D because moving all of the body parts would get the heart racing and the blood pumping!

kakasveta [241]3 years ago

5 0

Question: Th muscular system and the skeletal system of work together so the body can______.

Answer: move

Explanation: they send sgnals to the skelaton and bones which allows them to move

question answered by

(jacemorris04)

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Winds generally move from areas of _____________ to areas of ________________.

egoroff_w [7]

<span>A) high to low pressure </span>

4 0

3 years ago

We have an aqueous solution that contains 35% (by mass) of a hypothetical solute Z. The formula weight of the solute Z is 118 g/

Allisa [31]

Answer:

4.15 M

Explanation:

In order to find the molarity of a stock solution of Z, we use the formula;

Co = 10pd/M

where;

p = percentage by mass of Z

d = density of Z

M= molar mass of Z

Substituting values;

Co= 10 * 35 * 1.4/118

C0= 4.15 M

6 0

3 years ago

Which of the following would be considered a solution?

sineoko [7]

The answer is sugar in water because it is soluble in water

4 0

3 years ago

An aqueous solution 10 g of an optically pure substance diluted to 500ml with water and placed in a polarimeter tube 20 cm long.

Gennadij [26K]

Explanation:

Formula to calculate specific rotation is as follows.

Specific rotation ( $[\alpha]$ ) = $\frac{\alpha}{c} \times l$

where, $\alpha$ = observed rotation

c = concentration in g/ml

l = path length in dm

It is given that,

$\alpha = -6.16^{o}$

c = $\frac{10 g}{500 ml}$ = 0.02 g/ml

l = 20 cm = 2 dm (as 1 dm = 10 cm)

Therefore, calculate the specific rotation as follows.

Specific rotation ( $[\alpha]$ ) = $\frac{\alpha}{c} \times l$

= $\frac{-6.16^{o}}{0.02 g/ml} \times 2 dm$

= $-616^{o}$

Thus, we can conclude that the specific rotation of this compound is $-616^{o}$ .

7 0

3 years ago

A 30.7 mL, 1.66 M KMnO4 solution is mixed with 16.7 mL of 0.704 M KMnO4 solution. Calculate the concentration of the final solut

motikmotik

Ma = 1.66 M

Va = 30.7 mL

Mb = 0.704 M

Vb = 16.7 mL

Using the law <span>of dilution :
</span>
Mf = Ma x Va + Mb x Vb / Va + Vb

Mf = 1.66 x 30.7 + 0.704 x 16.7 / 30.7 + 16.7

Mf = 50.962 + 11.7568 / 47.4

Mf = 62.7188 / 47.4

Mf = 1.323 M

hope this helps!

6 0

3 years ago