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Oxana [17]
3 years ago
10

Pls answer this question and have a AMAGING day!! :))

Chemistry
1 answer:
ladessa [460]3 years ago
3 0

Answer:

B

Explanation:

because it is being cooled down

hoped this helps

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What kind of bond is created by the attraction between atomic particles of the opposite charge ?
Naya [18.7K]

Answer:

Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound. Such a bond forms when the valence (outermost) electrons of one atom are transferred permanently to another atom.

Explanation:

5 0
3 years ago
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Atmospheric pressure at sea level is 760 mm Hg, and oxygen makes up 20.9% of this air when it is dry. Scientists at the Mt. Wash
Lubov Fominskaja [6]

Answer:

127.28 mmHg

Explanation:

The molar fraction of oxygen in dry air at 760 mmHg is 20.9%. This molar fraction is not affected too much by the height, so it may be taken as a constant. The partial pressure of oxygen may be calculated as:

P_{O_{2}}=y_{O_{2}}*P

So, if the total pressure is 609 mmHg,

P_{O_{2}}=0.209*609=127.28 mmHg.

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3 years ago
Describe what occurs to the particles of a substance when the substance melts. Explain why this occurs.
GuDViN [60]

Explanation:

As a substance melts, and goes from a solid to a liquid state, the kinetic energy of the molecules increases, and the molecules move faster, and they separate further and further away from each other. The intermolecluar forces holding the molecules together become weaker

7 0
3 years ago
What is the molarity of a potassium triiodide solution, KI3(aq), if 30.00 mL of the solution is required to completely react wit
vfiekz [6]

Answer:

The molarity is 0.203 M

Explanation:

Using the formula C(oxi) x V(oxi) / [C(red)  x  V(red)] = N(oxi) / N(red)

Where oxi and red means reducing agent and oxidising agent respectively.

C = Concentration, V = Volume and N = number of moles.

C(oxi) = 0.5 M

V(oxi) = mL

C(red) = ?

V(red) = 30mL

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so N(red) = 1 , N(oxi) = 2

from the equation above,

C(red) = 0.5 x 25 x 1 / (2 x 30)

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3 years ago
Which one of the following reactions is NOT balanced?
Korolek [52]

Answer:

co+ o2+ 2co2 is not balanced reaction

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3 years ago
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