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katen-ka-za [31]

3 years ago

6

Which of the following are true of phases?Check all that apply.A.The particles in a liquid are in a fixed location.B.Gases have

more kinetic energy than liquids or solids.C.The particles of a solid vibrate.D.Gases have weak intermolecular forces between the atoms or molecules.

1 answer:

Snezhnost [94]3 years ago

7 0

Answer:

c

solids do vibrate very minutely\

Explanation:

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You are given a solution of HCOOH (formic acid) with an approximate concentration of 0.20 M and you will titrate this with a 0.1

jeka57 [31]

Answer:

$\boxed{\text{36 mL}}$

Explanation:

1. Write the balanced chemical equation.

$\rm HCOOH + NaOH $ \longrightarrow$ HCOONa + H$_{2}$O$

2. Calculate the moles of HCOOH

$\text{Moles of HCOOH} =\text{20.00 mL HCOOH } \times \dfrac{\text{0.20 mmol HCOOHl}}{\text{1 mL HCOOH}} = \text{4.00 mmol HCOOH}$

3. Calculate the moles of NaOH.

$\text{Moles of NaOH = 4.00 mmol HCOOH } \times \dfrac{\text{1 mmol NaOH} }{\text{1 mmol HCOOH}} = \text{4.00 mmol NaOH}$

4. Calculate the volume of NaOH

$c = \text{4.00 mmol NaOH } \times \dfrac{\text{1 mL NaOH }}{\text{0.1105 mmol NaOH }} = \textbf{36 mL NaOH }\\\\\text{The titration will require }\boxed{\textbf{36 mL of NaOH}}$

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2. Explain Charles law in terms of the kinetic<br> molecular theory?

Alina [70]

Answer:

Explanation:

Charles law states that "the volume of a fixed mass of gas varies directly as its absolute temperature if the pressure is constant".

This law is a derivative of the kinetic molecular theory of gases.

The law explained shows that as the temperature of gases increases the volume of gases increases.
When gases are heated the average kinetic energy of the molecules increases.
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They take up more spaces in this way.

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Sonbull [250]

Answer:

Gamma waves

Explanation:

Well although it doesn't look like an option, Gamma waves actually have the highest frequency.

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