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3 years ago

Solid iron prllets are heated, melted and drawn into wires. This is an example of a chemical reaction. True or False

Chemistry

1 answer:

monitta3 years ago

6 0

Answer:

False

Explanation:

It is not true that this is an example of a chemical reaction. This is a typical example of physical reaction.

Most physical changes are often phase changes.

A phase change is a change in the physical state of a body.
In this change, it is from solid to liquid.
Now new substances are formed.
When substances are changed from one form to another, it is a physical change.

In a chemical change, a new substance is formed at the end of the process.

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If 45 mL of water are added to 250 mL of a 0.75 M K2SO4 solution, what will the molarity of the diluted solution be?

krok68 [10]

Answer:

$\large\boxed{\large\boxed{0.64M}}$

Explanation:

When you form a diluted solution from a mother (concentrated) solution, the moles of solute are determined by the mother solution.

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$Molarity=\dfrac{\text{moles of solute}}{\text{volume of the solution in liters}}$

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Hi!

The substance that could be found in air, water or soil that is harmful to humans or animals is called pollutant.

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3 years ago

Solid iron prllets are heated, melted and drawn into wires. This is an example of a chemical reaction. True or False​

Solid iron prllets are heated, melted and drawn into wires. This is an example of a chemical reaction. True or False