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2 years ago

1) In which state of matter will particles move the fastest?

Chemistry

1 answer:

Jobisdone [24]2 years ago

7 0

Answer:

Gases

Explanation:

The particals will move around rapidly in all directions.

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The equilibrium constant has been estimated to be 0.12 at 25 °C. If you had originally placed 0.069 mol of cyclohexane in a 2.8

scZoUnD [109]

Answer: Concentrations of cyclohexane and methylcyclopentane at equilibrium are 0.0223 M and 0.0027 M respectively

Explanation:

Moles of cyclohexane = 0.069 mole

Volume of solution = 2.8 L

Initial concentration of cyclohexane = $\frac{moles}{Volume}=\frac{0.069}{2.8}=0.025M$

The given balanced equilibrium reaction is,

cyclohexane ⇔ methylcyclopentane

Initial conc. 0.025 M 0

At eqm. conc. (0.025-x)M (x) M

The expression for equilibrium constant for this reaction will be,

K= methylcyclopentane / cyclohexane

Now put all the given values in this expression, we get :

$0.12=\frac{(x)}{(0.025-x)}$

By solving the term 'x', we get :

x = 0.0027

Concentration of cyclohexane at equilibrium = (0.025-x ) M = (0.025-0.0027) M = 0.0223 M

Concentration of methylcyclopentane at equilibrium = (x ) M = (0.0027) M

4 0

3 years ago

For an aqueous solution of sodium chloride (NaCl) .Determine the molarity of 3.45L of a solution that contains 145g of sodium

worty [1.4K]

Molar mass NaCl = 58.44 g/mol

number of moles:

mass NaCl / molar mass

145 / 58.44 => 2.4811 moles of NaCl

Volume = 3.45 L

Therefore :

M = moles / volume in liters:

M = 2.4811 / 3.45

M = 0.719 mol/L⁻¹

hope this helps!

6 0

3 years ago

You have left the carton of milk out of the refrigerator overnight and it has spoiled. This is an example of a _________.

jekas [21]

Chemical change. Compounds and molecules in the milk are reacting with the air and breaking down and forming new molecules.

5 0

3 years ago

Which of the following best describes the formation of plasma?

Sav [38]

I say, D is the answer

5 0

3 years ago

What volume would 2.25 moles of Ne gas occupy at STP?

Dafna1 [17]

As we know that one mole of any Ideal gas at standard temperature and pressure occupies exactly 22.4 dm³ volume.

Solution for problem:

When 1 mole Neon (Ne) occupies 22.4 dm³ at STP then the volume occupied by 2.25 moles of Neon is calculated as,

= ( 22.4 dm³ × 2.25 moles ) ÷ 1 mole

= 50.4 dm³ 1dm³ = 1 L

Result:

So, 50.4 dm³ (Liter) volume will be occupied by 2.25 moles of Neon gas if it acts ideally at STP.

8 0

2 years ago

1) In which state of matter will particles move the fastest?​

1) In which state of matter will particles move the fastest?