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2 years ago

10

Which of the following is best described by the term macroscopic?

1 answer:

n200080 [17]2 years ago

4 0

Answer:

A

Explanation:

Since macroscopic means visible to the naked eye without a microscope it would be A. This is because we can see active phase changes in real time without any magnification like water boiling or ice melting.

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3. What is the name for the items in this group as a whole: protons,

Sidana [21]

Answer: C) Subatomic particles

Explanation: I just learned this in ap environmental science

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2 years ago

What group is helium in? Group 8 or group 2?

Gemiola [76]

Answer:

group 8 of the periodic table

Explanation:

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2 years ago

Read 2 more answers

The reactants of two chemical equations are listed.

Oksi-84 [34.3K]

Answer:

Equation 2, because K being more reactive, exchanges position with Pb in PbNO3.

Explanation:

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2 years ago

Calculate the osmotic pressure (in torr) of 6.00 L of an aqueous 0.958 M solution at 30.°C, if the solute concerned is totally i

cluponka [151]

<u>Answer:</u> The osmotic pressure is 54307.94 Torr.

<u>Explanation:</u>

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

$\pi=iCRT$

where,

$\pi$ = osmotic pressure of the solution = ?

i = Van't hoff factor = 3

C = concentration of solute = 0.958 M

R = Gas constant = $62.364\text{ L Torr }mol^{-1}K^{-1}$

T = temperature of the solution = $30^oC=[30+273]K=303K$

Putting values in above equation, we get:

$\pi=3\times 0.958mol/L\times 62.364\text{ L. Torr }mol^{-1}K^{-1}\times 303K\\\\\pi=54307.94Torr$

Hence, the osmotic pressure is 54307.94 Torr.

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2 years ago

How is a lithium atom (Li) different from a lithium ion (Li+)

Andrews [41]

A Lithium atom that has lost ONE Electron, is called a Lithium Ion (Li+).

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2 years ago