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3 years ago

What happends to particles in matter when matter gains heat?

Chemistry

2 answers:

harina [27]3 years ago

6 0

Answer:

When matter gains heat the particles will move and vibrate faster!

Explanation:

Aleks04 [339]3 years ago

5 0

Answer:

The particles in matter begin to move faster and faster when they obtain heat.

Explanation:

Here is an example; ice's particles are pretty much still, they don't move, hence why ice is a solid. Then you have water, the particles in water move at a moderate speed, hence why it's a liquid. Then you have steam, these particles are moving so fast that they can float, particles are far apart from each other and moving very fast, this is why it's a gas. Lastly, you have plasma, which is pretty much radiation and/or light at this point, these particles are extremely far apart and are moves very very fast.

May I have brainliest please? :)

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B. the number 3.
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3 years ago

The pH of a neutral solution is below 7 above 7 7 7.5

morpeh [17]

The pH scale ranges from 0 to 14 and goes from acidic to alkaline, where 7 - the center of the scale - is the most neutral.

Answer:
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3 years ago

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Answer:

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3 years ago

Assuming the volumes are additive, what is the [Cl−] in a solution obtained by mixing 297 mL of 0.675 M KCl and 664 mL of 0.338

Elden [556K]

Answer: The concentration of chloride ions in the solution obtained is 0.674 M

Explanation:

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}$ .....(1)

For KCl:

Molarity of KCl solution = 0.675 M

Volume of solution = 297 mL

Putting values in equation 1, we get:

$0.675=\frac{\text{Moles of KCl}\times 1000}{297}\\\\\text{Moles of KCl}=\frac{(0.675mol/L\times 297)}{1000}=0.200mol$

1 mole of KCl produces 1 mole of chloride ions and 1 mole of potassium ion

Moles of chloride ions in KCl = 0.200 moles

For magnesium chloride:

Molarity of magnesium chloride solution = 0.338 M

Volume of solution = 664 mL

Putting values in equation 1, we get:

$0.338=\frac{\text{Moles of }MgCl_2\times 1000}{664}\\\\\text{Moles of }MgCl_2=\frac{(0.338mol/L\times 664)}{1000}=0.224mol$

1 mole of magnesium chloride produces 2 moles of chloride ions and 1 mole of magnesium ion

Moles of chloride ions in magnesium chloride = $(2\times 0.224)=0.448mol$

Calculating the chloride ion concentration, we use equation 1:

Total moles of chloride ions in the solution = (0.200 + 0.448) moles = 0.648 moles

Total volume of the solution = (297 + 664) mL = 961 mL

Putting values in equation 1, we get:

$\text{Concentration of chloride ions}=\frac{0.648mol\times 1000}{961}\\\\\text{Concentration of chloride ions}=0.674M$

Hence, the concentration of chloride ions in the solution obtained is 0.674 M

5 0

3 years ago