3 years ago

Helpppp fasttttttttttttttt Choose the best word to complete the sentence.

Chemistry

1 answer:

Lapatulllka [165]3 years ago

5 0

Answer:

equilateral (B)

Explanation:

it is the only word which relates to triangles and their shape - plus, its logical and makes sense.

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Balance the Equation <br>with the steps please:)

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Explanation:

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A functional group of atoms, such as OH, is called a

Licemer1 [7]

<span>Hydroxy group..

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3 years ago

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

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

Where

M = Molarity

n = Number of moles of solute

V = Volume of solution

So to find the number of moles can be expressed as

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

mol of substance -Lithium nitrite - LiNO₂ :

V = 250 ml = 0.25 L

M = 0.75 M

$\tt n=0.25\times 0.75=0.1875$

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

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

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3 years ago

34 Points!! 17 Each Points Please Help ASAP!! View Attached Image!! Will Mark Brainliest If All Are Answered!!

Katarina [22]

Answer:

I think it is A _ B_C_D

Explanation:

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Which term refers to the number of moles of solute per liter of solution?

scoray [572]

Answer:

molarity

Explanation:

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