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3 years ago

Which type of substance is made of only one kind of matter and has definite properties?

Chemistry

1 answer:

aivan3 [116]3 years ago

3 0

A pure chemical substance

Explanation:

A pure substance is any substance made up of only one kind of matter and has definite properties.

Matter is anything that has weight and occupies space

On a broad basis, matter can be categorized as pure or distinct substances and impure substances or mixtures.

Pure substances have the following properties;

All parts of a pure substance remains the same throughout i.e homogeneous.
Their composition is definite
They cannot easily be broken or separated down into simpler substances by physical means.

They have a unique set of chemical properties.

Pure substances are elements and compounds.

learn more:

Heterogeneous mixtures brainly.com/question/1446244

#learnwithBrainly

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Heating up a reaction increases the speed of a reaction until the ____

Vesnalui [34]

Heating up a reaction increases the speed of a reaction until the enzyme denatures.

<h3>What is enzyme denaturation?</h3>

Enzyme denaturation occurs when a biological protein catalyst does not work anymore due to a high temperature that alters its tridimensional conformation.

This cellular process (denaturation) is well known to be one of the main causes of enzymatic failure.

In conclusion, heating up a reaction increases the speed of a reaction until the enzyme denatures.

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5 0

1 year ago

If a lab requires each lab group to have 25ml of a solution and it takes 15 grams of CuNO3 to make 1 liter of solution how many

tino4ka555 [31]

We need to do some general algebra here.

We will find that you need 8.25 grams of CuNO₃ to make enough solution for the 22 labs.

Each lab group needs 25 ml of solution.
it takes 15 g of CuNO₃ to make one L of that solution.
There are 22 labs.

Because each lab needs 25 ml of solution, 22 labs will need that amount 22 times, so the <u>total amount of solution needed</u> is:

22*25ml = 550 ml

Now we know that we need 15 grams to make one liter of solution, and:

1 L = 1000ml

Then you need 15g to make 1000ml

and x (we want to find this amount) to make 550ml

Then we can write two equations (not actual equations, as these are different units) like:

x = 550ml

15g = 1000ml

Now we can take the quotient between these two equations:

x/15 g = (550ml/1000ml)

And now we can solve this for x:

x = (550ml/1000ml)*15g = 8.25g

So you need 8.25 grams of CuNO₃ to make enough solution for the 22 labs.

If you want to learn more, you can read:

brainly.com/question/8743486

5 0

3 years ago

a drop of gasoline has a mass of 22 mg and a density of 0.754 g/cm^3. What is its volume in cubic centimeters?

Verizon [17]

The density can be calculated using the following rule:
density = mass/volume
therefore,
volume = mass/density

we have the mass=22 mg=0.022 grams and density=0.754g/cm^3

substituting in the above equation, we can calculate the volume as follows:
volume = 0.022/0.754 = 0.0291 cm^3

7 0

3 years ago

What is the age of mummified primate skin that contains 8.25% of the original quantity of 14C?

rjkz [21]

Answer:

20619.4793 years

Explanation:

The half life of carbon-14 = 5730 years

The formula for the half life for a first order kinetic reaction is:

$t_{1/2}=\frac {ln\ 2}{k}$