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gogolik [260]
3 years ago
15

Zzzzzzzzzzzzzzzzzzzzzzz

Chemistry
1 answer:
Korolek [52]3 years ago
6 0

Answer:

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Explanation:

wake up wake up wake up wake up

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If the rate of melting and the rate of freezing were the same, we could say there is a dynamic equilibrium of the system, TRUE O
Jet001 [13]
The answer should be TRUE because a dynamic equilibrium is a state of balance between continuing processes. Hope this helps (:
7 0
3 years ago
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If the pH of a solution is 7.6, what is the pOH? A. 6.4 B. 8.4 C. 5.4 D. 7.4
maks197457 [2]

Answer:

6.4

 

Explanation:  pH

+

pOH

=

14

So if  

pH

=

7.6

then  

pOH

=

14

−

pH

=

6.4

Explanation:

Wrote this out spaced so it's more clear.

8 0
3 years ago
g at constant temperature, a sample of helium at 2 atm in a closed container was compressed from 5.00 L to 3.00 L. what was the
Firdavs [7]

The new pressure exerted by helium on its container is 2533.33 torr.

Boyle's law: For a fixed amount of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. so PV= constant.

At constant temperature and moles,

P1V1 = P2V2.

The original sample is at 2atm torr and volume 5.00 L and then helium gas was compressed to 3.00 L

∴ P₁V₁ = P₂V₂

 (2× 760 torr)(5.00 L ) = (3.00 L )(x torr),

 x = 2533.33 torr.

 P₂ = 2533.33 torr.

Therefore, the new pressure exerted by helium on its container is 2533.33 torr.

Learn more about pressure here:

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3 0
3 years ago
A photon of light possesses 5 x 10^-19 J of energy. Calculate its frequency
saveliy_v [14]

Answer:

The frequency of photon is 0.75×10¹⁵ s⁻¹.

Explanation:

Given data:

Energy of photon = 5×10⁻¹⁹ J

Frequency of photon = ?

Solution:

Formula;

E = hf

h = planck's constant = 6.63×10⁻³⁴ Js

5×10⁻¹⁹ J =  6.63×10⁻³⁴ Js ×f

f =  5×10⁻¹⁹ J / 6.63×10⁻³⁴ Js

f = 0.75×10¹⁵ s⁻¹

The frequency of photon is 0.75×10¹⁵ s⁻¹.

4 0
3 years ago
List the properties of metals and nonmetals
kondor19780726 [428]

Lustrous (shiny)

Good conductors of heat and electricity.

High melting point.

High density (heavy for their size)

Malleable (can be hammered)

Ductile (can be drawn into wires)

Usually solid at room temperature (an exception is mercury)

Opaque as a thin sheet (can't see through metals)

3 0
3 years ago
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