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Verdich [7]
3 years ago
11

Which explanation best compares the movement of particles in the three states of matter?

Chemistry
1 answer:
Degger [83]3 years ago
3 0
<span>The correct answer is the second statement. Particles in a solid can only vibrate. In a liquid, they slide against each other. In a gas, they move freely, bouncing and bumping into each other. Solids are packed thus molecules are restricted and can only vibrate. Liquids, on the other hand, molecules can move and slide against each other since they are loosely packed. Lastly, gas particles is very loosely packed so they can move freely. </span>
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Pls helpits rlly hard
victus00 [196]

Answer:

5: 0.16

6: 50

Explanation:

Question 5:

We can use the equation density = mass/ volume.

We already have the mass (12g), but now we need to find the volume of the cylinder.

The equation for this is πr²h

So we know the radius is 2 and the height is 6.

π x (2)² x 6 = 24π = 75.398cm³

Now we can use the density equation above:

12/75.398 = 0.1592g/cm³ = 0.16g/cm³.

Question 6:

This time, we have to rearrange the equation density = mass/ volume to find the mass.

We know mass = density x volume.

From the question, the density is 2.5g/mL and the volume is 20mL.

Following the equation above, we do 2.5 x 20 to get 50g.

5 0
3 years ago
3. Other than being gases, what is special about the Noble Gases? ​
nydimaria [60]

Answer:

All the noble gases have the full number of electrons in each layer.

Explanation:

For example, neon is a noble gas. The first layer of electrons is full since it contains the max amount of electrons which is 2. The next layer is also full, since it contains 8 electrons which is the max amount it can hold.

I hope this helped and please mark me as brainliest!

4 0
2 years ago
Consider the dissolution of AB(s): AB(s)⇌A+(aq)+B−(aq) Le Châtelier's principle tells us that an increase in either [A+] or [B−]
Arlecino [84]

Answer:

A. 0.000128 M is the solubility of M(OH)2 in pure water.

B. 3.23\times 10^{-6} M is the solubility of M(OH)_2 in a 0.202 M solution of M(NO_3)_2.

Explanation:

A

Solubility product of generic metal hydroxide = K_{sp}=8.45\times 10^{-12}

M(OH)_2\rightleftharpoons M^{2+}+2OH^-

                      S         2S

The expression of a solubility product is given by :

K_{sp}=[M^{2+}][OH^-]^2

K_{sp}=S\times (2S)^2=4S^3

8.45\times 10^{-12}=4S^3

Solving for S:

S=0.000128 M

0.000128 M is the solubility of M(OH)2 in pure water

B

Concentration of M(NO_3)_2 = 0.202 M

Solubility product of generic metal hydroxide = K_{sp}=8.45\times 10^{-12}

M(OH)_2\rightleftharpoons M^{2+}+2OH^-

                   S          2S

So, [M^{2+}]=0.202 M+S

The expression of a solubility product is given by :

K_{sp}=[M^{2+}][OH^-]^2

8.45\times 10^{-12}=(0.202 M+S)(2S)^2

Solving for S:

S=3.23\times 10^{-6} M

3.23\times 10^{-6} M is the solubility of M(OH)_2 in a 0.202 M solution of M(NO_3)_2.

8 0
4 years ago
A relatively simple way of estimating profit is to consider the the difference between the cost (the total spent on materials an
Vika [28.1K]

Answer:

( $ 8,384 )

Explanation:

-  From given information we know that 1 mol mCPHA provides the oxygens to 1 mol of propene, to make 1 mole of C3H6O so:

               1 mol C3H6      +     1 mol mCPHA      -->    1 mol C3H6O

              ( Mr = 42.08 g)        ( Mr = 172.57 g)          ( Mr = 58.08 g )

- For 1 kg equivalent equation by dividing the whole equation by the highest Molar Mass i.e of C3H6O, the result would be:

              1 mol C3H6      +     1 mol mCPHA      -->    1 mol C3H6O

            ( 42.08 / 58.08 )      ( 172.57 / 58.08 )          ( 1 )

     =     (  0.72452 kg )         ( 2.9712 kg )                  ( 1 kg )    

- However note that the reaction gives only a 96% yield, we scale up the reactants to get that desired 1 kg of C3H6O:

        (0.72452 kg ) (96/100)  + (2.9712 kg) (96/100)  --> 1 kg

     =      ( 0.75471 kg )            + ( 3.095 kg ) ---------------> 1 kg            

- The costs for each component produced:

            (0.75471 kg C3H6) ($10.97 per kg) = $8.279

            (3.095 kg mCPHA) ($5.28 per kg) = $16.342

            (0.75471 kg C3H6) / (0.0210 kg C3H6 / L dichloromethane) = 35.939

            (35.939 Litres dichloromethane) ($2.12 per L) = $ 76.19

- The cost of waste disposal ($5.00 per kilogram of propene oxide)  produced total cost, disregarding labor,energy, & facility costs:

     $8.279 + $16.342 + $ 76.19 + $5.00 = $105.81 per kg C3H6O produced

- Profit: ($258.25 / kg C3H6O) - ($105.81 cost per kg) = $152.44 profit /kg

- Calculate the profit from producing 55.00kg of propene oxide:

             (55.00kg) ($152.44 /kg) = $8,384.2 .. ( $ 8,384 )

6 0
3 years ago
How many elements are in CaCI2
AlexFokin [52]

Answer:

It is made up of 2 elements. The elements are calcium and chlorine.

Explanation:

I just know

6 0
3 years ago
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