2 years ago

What must happen for an igneous rock to form

Chemistry

1 answer:

Ksenya-84 [330]2 years ago

4 0

Answer:

Igneous Rocks: form by crystallizing melted material (magma).

Explanation:

They can form either on the surface (extrusive igneous rocks), or deep in the crust (intrusive or plutonic igneous rocks).

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When you mix copper sulphate solution and steel wool, what is the chemical property that can be observed.

bazaltina [42]

Answer:

Explanation:

depending on the activity series there will probably be a single replacement reaction possibly heat or color change and the copper precipitate out of solution

6 0

3 years ago

How many miles can you drive, if your car gets 21.3 miles per gallon and you have 12.0 gallons of gas?

Travka [436]

Answer:

255.6

Explanation:

If you have 12 gallons and get 21.3mpg,

-Multiply 21.3 by 12

-you can travel 255.6 miles before running out of gas.

-If you need to estimate, round up to 256 miles.

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3 years ago

You drop an unknown substance that weighs 8.3g into a graduated cylinder with 6ml of water. The water rises to 8ml when you drop

valkas [14]

Answer:

<h3>The answer is 4.15 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass of object = 8.3 g

volume = final volume of water - initial volume of water

volume = 8 - 6 = 2 mL

So we have

$density = \frac{8.3}{2} \\$

We have the final answer as

Hope this helps you

7 0

3 years ago

What is 4.07 cm x 2.3cm, rounded to the correct number of significant figures

Tom [10]

Answer: 9.4cm^2

Explanation:

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3 years ago

Which statement describes the energy changes that occur as bonds are brokes and a chemical reaction

Leni [432]

Answer:

Energy is released when bonds are broken, and energy is absorbed when bonds are formed.

7 0

2 years ago