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storchak [24]
3 years ago
11

Which of these statements best describes the relationship between elements, compunds, and pure substances?

Chemistry
2 answers:
Oliga [24]3 years ago
5 0

Answer: D

Explanation:

Nitella [24]3 years ago
3 0

Answer: its d.

Explanation: i just know and i got it from my test.

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If a car of 2 kg mass has a force of 8 Newtons exerted on it what is it’s acceleration
Kaylis [27]

Answer:

b) 4m/s^2

Explanation:

F=ma

F=8N

m=2kg

a=?

a=F÷m

8/2=4

acceleration=4m/s²

7 0
3 years ago
Which of the following statements is false? Check all that apply. Gases are far more compressible than liquids The volume occupi
Sergio039 [100]

Answer:

The false statement is: 3. Because liquid water and liquid carbon tetrachloride do not mix, neither do their vapors

Explanation:

Gas is a state of matter, that has <u>less density than liquids and solids</u>. The gaseous particles have low intermolecular forces and thus they can move freely.

It is a very <u>compressible fluid</u> that has no fixed shape. Gas occupies the whole container in which it is stored, thus taking the shape of the container. Therefore, <u>the volume of the gas is equal to the volume of the container.</u>

<u>Polar liquid like water (H₂O) and nonpolar liquid like carbon tetrachloride, are immiscible. However, in the gaseous state, their vapors form a  homogeneous mixture.</u>

5 0
3 years ago
Which of the following is an example of a chemical change? A. Boiling water B. Burning paper C. Dissolving sugar in water D. Mel
SpyIntel [72]
It’s B.burning paper
8 0
4 years ago
Read 2 more answers
HELLP ME PLSSS
Dima020 [189]

Answer:

B

Explanation:

conduction is the transfer of heat between objects that touch

8 0
3 years ago
For an aqueous solution of sodium chloride (NaCl) .Determine the molarity of 3.45L of a solution that contains 145g of sodium
worty [1.4K]
Molar mass NaCl = 58.44 g/mol

number of moles:

mass NaCl / molar mass

145 / 58.44 => 2.4811 moles of NaCl

Volume = 3.45 L

Therefore :

M = moles / volume in liters:

M = 2.4811 / 3.45

M = 0.719 mol/L⁻¹

hope this helps!
6 0
3 years ago
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