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3 years ago

Which sample of matter can be separated into different substances by physical means

Chemistry

2 answers:

ikadub [295]3 years ago

8 0

Answer:

Heterogeneous mixtures

Explanation:

It is composed of two or more types of matter that can be present in varying amounts and can be separated by physical means. Heterogeneous mixtures vary in composition from point to point; homogeneous mixtures have the same composition from point to point.

SpyIntel [72]3 years ago

5 0

Answer:

a heterogeneous mixture

Explanation:

an example would be sand and water because it can be filtered which is a physical mean of separation.

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Select The on that most applys<br><br><br> Will mark brainliest

sdas [7]

Answer:

A and C

Explanation:

7 0

3 years ago

What is the most mass of (NH4)2CO3 (H=1,C=12,N=14,O=16

Agata [3.3K]

Answer:

96.09 g/mol

Explanation:

You just need to first get the atomic weights of the elements involved. You can easily get these from your periodic table.

If you are going to do this properly, please use the weight with at least two decimal places for accuracy (e.g. 15.99 g/mol).

Also, please take note that I will be using the unit g/mol for all the weights. Thus,

Step 1

N = 14.01 g/mol

H = 1.008 g/mol

O = 16.00 g/mol

C = 12.01 g/mol

Since your compound is

(

)

, you need to multiply the atomic weights by their subscripts. Therefore,

Step 2

N = 14.01 g/mol × 2 =

28.02 g/mol

H = 1.008 g/mol × (4×2) =

8.064 g/mol

O = 16.00 g/mol × 3 =

48.00 g/mol

C = 12.01 g/mol × 1 =

12.00 g/mol

To get the mass of the substance, we need to add all the weights from Step 2.

Step 3

molar mass of

(

)

(28.02 + 8.064 + 48.00 + 12.01) g/mol

96.09 g/mol

this is a google search and a example i hope is helps to solve

6 0

3 years ago

1. what would happen to an enzyme if the temperature and Ph changed significantly beyond the enzyme’s optimum level?

Tpy6a [65]

i am groot i am groot

6 0

3 years ago

What is a major problem with CFCs?

oksian1 [2.3K]

The major problem with CFCs is that It is a greenhouse gas, Option A is correct.

Chlorofluorocarbons (CFCs) are nontoxic, nonflammable chemicals containing atoms of carbon, chlorine, and fluorine.

They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants.

CFCs are classified as halocarbons, a class of compounds that contain atoms of carbon and halogen atoms

The major problem with CFC's is that they are green house gases

It destroys ozone in the upper atmosphere (stratosphere).

CFCs can produce more than 10,000 times as much warming, pound for pound, once they are in the air.

It is not only because of their dramatic warming potential but also

They were found to be the primary cause of the rapidly escalating destruction of the Earth’s ozone layer,

which protects the planet from dangerous, cancer-causing levels of ultraviolet radiation.

Therefore The major problem with CFCs is that It is a greenhouse gas, Option A is correct.

To know more about CFC'S

brainly.com/question/14330630

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6 0

2 years ago

What makes the atomic radius change down a column of the periodic table

Olin [163]

As you go across a period, radius shrinks because you are adding protons. The added positive charge increases pull on the electron shells.

As you go down a group, radius gets larger because you are increasing shells of electrons. This increases shielding of the nucleus' positive charge, so the electrons are not pulled in as much.

8 0

3 years ago

Read 2 more answers