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Dima020 [189]
3 years ago
10

What improvements have been made in modern farming? Select all that apply.

Chemistry
1 answer:
Sever21 [200]3 years ago
5 0

Answer:

all of them except number 2

Explanation:

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What is the pH of a solution with hydroxide ion concentration of 0.005
Julli [10]

Answer:

pH = 11.7

Explanation:

pOH= -log [OH]=-log[0.05]

=2.3

pOH+pH= 14

pH= 14-2.3= 11.7

4 0
3 years ago
The size of an atom would be described in _______.
Andreas93 [3]

Answer:

atomic radius

Explanation:

so radius

7 0
3 years ago
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How many elements had been discovered by 1860
UkoKoshka [18]

60 elements! I don't exactly know every element known, so if you are asking that, please tell us, but what I do know is that there were 60 elements in the periodic table by 1860.

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3 years ago
Which statement BEST explains why liquids and gases can flow but solids cannot?
storchak [24]

Answer:

B

Explanation:

A is not the answer.  Although the statement is accurate in regards to gases, it does not explain why liquids and gases can flow.

B is the answer.  Solids are in fixed structures.  When you apply heat or pressure, these structures are broken apart and allowed to move freely.

C is not the answer.  This is inaccurate.  Changing the phase of a substance does not change the size of the particle.

D is not the answer.  The opposite of this statement is true.  The attractive forces between particles in a solid allow the substance to hold its structure.  When you apply heat or pressure, the attractive forces are overpowered and the structure is broken.

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3 years ago
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A, Heat will flow from the nickle to the water in the glass.

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