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Zinaida [17]
3 years ago
12

PLEASE HELP ME!!!! I DON'T UNDERSTAND

Chemistry
1 answer:
Sunny_sXe [5.5K]3 years ago
8 0

Answer:

I think the answer is c. It would have difficulty moving.

Explanation:

The skeleton helps the vertebrate move and supports its body, so it will most likely have trouble moving.

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If you have 250 mL of 0.75 M LINO2.<br> How many grams of this substance<br> would you have?
Vesna [10]

Mass of this substance = 9.928 g

<h3>Further explanation</h3>

Molarity is a way to express the concentration of the solution

Molarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution

\large{\boxed {\bold {M ~ = ~ \frac {n} {V}}}

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M = Molarity

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V = Volume of solution

So to find the number of moles can be expressed as

\boxed{\bold{n=V\times M}}

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\tt n=0.25\times 0.75=0.1875

So mass of this substance -  LiNO₂ (MW=52,947 g/mol) :

\tt mass=mol\times MW\\\\mass=0.1875\times 52,947 g/mol\\\\mass=9.928~g

4 0
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