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fredd [130]
3 years ago
10

Why is an ice cube less dense than liquid water?

Chemistry
2 answers:
Hatshy [7]3 years ago
7 0

Answer:

B hope this helps

Explanation:

arsen [322]3 years ago
6 0

Answer:

B)

Explanation:

Molecules in ice are more spread out than molecules in liquid water :)

Have a nice day/night

Smile it looks good on you :)

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If 6.49 mol of ethane (C2H6) undergo combustion according to the unbalanced equation
MArishka [77]

Answer:

22.715 moles of oxygen are used

Explanation:

Given data:

Number of moles of ethane = 6.49 mol

Number of moles of O₂ required = ?

Solution:

Chemical equation:

2C₂H₆ + 7O₂       →     4CO₂ + 6H₂O

Now we will compare the moles of oxygen with ethane.

                    C₂H₆           :           O₂  

                       2              :             7

                     6.49           :           7/2×6.49 = 22.715 mol

Thus, 22.715 moles of oxygen are used.

3 0
3 years ago
Describe the difference between intensive and extensive propoerties. Which of the following propoerties are intensive: (a) mass;
STatiana [176]

Answer:

The properties <u>that </u><u>do not vary</u><u> with the variation in the quantity of the material are called as </u><u>intensive property</u>.

While the <u>extensive properties</u><u> are those which </u><u>vary with the variation in the quantity of the material</u>.

Intensive properties:

Mass and volume

Extensive properties:

Density and melting point

Explanation:

The properties <u>that </u><u>do not vary</u><u> with the variation in the quantity of the material are called as </u><u>intensive property</u>.

While the <u>extensive properties</u><u> are those which </u><u>vary with the variation in the quantity of the material</u>.

Intensive properties:

Mass and volume, as with increase in quantity of the material mass and volume increases.

Extensive properties:

Density and melting point, as they remain constant for a object or material

4 0
4 years ago
How does the structure of water explain the physical and chemical properties of water?
TiliK225 [7]
The chemical composition of water is H2O – two hydrogen atoms and one oxygen atom. Water has special properties because of the way these atoms bond together to form a water molecule, and the way the molecules interact with each other. ... Water's polarity allows it to dissolve other polar substances very easily.
8 0
3 years ago
Why do chemical compounds dissolve more quickly in hot solvent than in cold solvent?
Oksana_A [137]
Chemical compounds<span> tend to </span>dissolve more quickly in hot solvent than in cold solvent, t<span>he </span>solvent<span> molecules have </span>more<span> energy to pull the solute particles apart. Give an example of two liquids that are miscible.

https://www.studyblue.com/notes/note/n/chemistry/deck/938054
</span>
8 0
3 years ago
How many particles are there in 1.43 g of a molecular compound with a gram molecular mass of 233g
dalvyx [7]
<span>1.43g x (1 mole / 233g) x (6.022x10^23 particles / mole) =  3.70 x 10^ 21 particles</span>
7 0
3 years ago
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