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3 years ago

Please write down the definitions of elements, compounds, mixtures, homogenous mixtures, and heterogenous mixtures.

2 answers:

7 0

If it is pure, the substance is either an element or a compound. If a substance can be separated into its elements, it is a compound. If a substance is not chemically pure, it is either a heterogeneous mixture or a homogeneous mixture. If its composition is uniform throughout, it is a homogeneous mixture

MA_775_DIABLO [31]3 years ago

3 0

A homogeneous mixture is a mixture in which the composition is uniform throughout the mixture.

A heterogeneous mixture is a mixture in which the composition is not uniform throughout the mixture.

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How is a pure substance different from a mixture?

QveST [7]

The answer is A. Mixtures can be separated by physical means

A pure substance cannot be separated.

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3 years ago

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What information does a solubility table give?

guajiro [1.7K]

Answer:

Option D - It tells which compounds will dissolve in water.

Explanation:

It is used to predict whether or not a given ionic compound is soluble.

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2 years ago

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Question:

Nikolay [14]

Answer:

north pole, south pole, and magnetic field

Explanation:

the earth basically has a giant bar magnet inside it( the axis). Earth has a north pole, a south pole, and a magnetic field which are the same things that a bar magnet has.

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3 years ago

The structure of a comet is considered to be like a large, ____, or a mass of frozen ice and rock. a. solid planet c. cratered m

svetlana [45]

B is the correct answer I hope that this help

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3 years ago

What is the ratio strength of 100 ml containing a 1:50 povidone iodine solution diluted to 1000 ml? (answer must be numeric; no

guapka [62]

We are given that:

100 mL total solution with 1:50 povidone iodine solution

This means that there is 1 mL of povidone iodine solution per 50 mL of total solution. Since we are given a total of 100 mL solution, therefore we have an initial amount of:

pure povidone iodine solution = 2 mL

This amount of pure povidone iodine solution is added or diluted (most perhaps with water) to make a total of 1000 mL total solution, therefore the new ratio is:

2:1000 povidone iodine solution

By dividing both sides by 2, this simplifies to

1:500 povidone iodine solution

Answer:

1:500

4 0

3 years ago