A substance that has a uniform composition and is able to be separated by physical means is?

Answers

Answer 1

Answer: The answer is homogeneous mixture. It is a mixture which has uniform composition and properties all throughout. Mixtures can be separated by physical processes. Mixtures are systems that consist of two or more substances which are mixed but not chemically combined.

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Beginning with commercial grade hydrochloric acid, 1.00 • 10^2 mL of a 12.4 M HCl is added to water to bring the total volume if the solution to 0.820L. What is the concentration of this new solution?

Please help asap! I have no idea what to write! :) Thanks a bunch!!

Answers

Answer:

I don't know

Explanation:

Why don't the oceans simply reabsorb the water that evaporates?

Answers

The water evaporates into the clouds

because the oceans already have a ton of water in them so they don't really need to absorb the water again that evaporates

What does an acid+base make

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It makes salt and water :)

In the process of neutralization acid + base gives you H2O and NACL (WATER AND SALT)

When studying seismic records from all over the globe, what did scientists find out about the pattern of earthquakes?A-Many earthquakes are concentrated in narrow zones near earth's poles.

B-Many earthquakes are concentrated in narrow zones at the centers of plates.

C-Many earthquakes are concentrated in narrow zones along plate boundaries.

D-Most earthquakes occur deep under the ocean.

(I was thinking C but i'm not sure...)

Answers

Its C. Many earthquakes are concentrated in narrow zones along plate boundaries

The answer is C-Many earthquakes are concentrated in narrow zones along plate boundaries.

Express the product of 3.2 and 5.00 using the correct number of significant digits.

Answers

Answer: $1.6* 10^1$

Explanation:

Significant figures : The figures in a number which express the value -the magnitude of a quantity to a specific degree of accuracy is known as significant digits.

Rules for significant figures:

Digits from 1 to 9 are always significant and have infinite number of significant figures.

All non-zero numbers are always significant.

All zero’s between integers are always significant.

All zero’s preceding the first integers are never significant.

All zero’s after the decimal point are always significant.

The rule apply for the multiplication and division is :

The least number of significant figures in any number of the problem determines the number of significant figures in the answer.

Thus for product of $3.2* 5.00=16$

In this problem, 3.2 has 2 significant figures and 5.00 has 3 significant digits thus product will have the least number of significant figures which is 2. So, the answer will be in 2 significant figures.

Therefore, the answer is $1.6* 10^1$

So 3.2 × 5 = 16 hope this helps

What is the volume of solution (in mL) produced when 91.80g of Mg(OH)2 are usedto produce a 0.7M solution? Record your answer to 1 decimal places.