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Y_Kistochka [10]
3 years ago
13

Which theory was contradicted by experiments with the photoelectric effect?

Chemistry
2 answers:
olga55 [171]3 years ago
8 0

Answer:

C Visible light...

Explanation:

irina [24]3 years ago
8 0

Answer:

C. Visible light, regardless of color, will cause the ejection of electrons when striking metal.

Explanation:

I got it right on the quiz edg21

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the movement of molecules from an area of low concentration to an area of high concentration occurs in what transport?
solmaris [256]
Movement of molecules from an area of higher concentration to one of lower concentration is called Diffusion
4 0
3 years ago
In a closed container with a fixed volume, when the temperature of a gas doubles, the pressure of the gas is?
nevsk [136]

Answer:

The pressure of the gas is:

<u>Doubled</u>

<u></u>

Explanation:

Byole's Law  = Pressure of fixed amount of gas is inversely proportional to Volume at constant temperature.

PV = k = constant

P1V1 = P2V2

<u>Charle's Law: </u> The volume of ideal gas at fixed pressure is directly proportional to Pressure.

V/T = constant

V1/T1 = V2/T2

On combinig the charles and byole's law , we get:

\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}

Now , According to question :

V2 = V1

T2 = 2(T1)

We have to find the relation between the pressure :

insert the value in the equation

\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{2}}{T_{2}}

\frac{P_{1}V_{1}}{T_{1}}=\frac{P_{2}V_{1}}{2T_{1}}

V1 and V1 & T1 and T1 cancels each other,

So we get

P2 = 2 P1

So the new pressure is double of the original pressure

3 0
3 years ago
K2HPO4 is a highly water-soluble salt. It can be used as a buffering agent, food additive, or
borishaifa [10]

Answer:

91.7%

Explanation:

3 0
3 years ago
Read 2 more answers
How many valence electrons are represented in the following electron configuration? 1s²2s²2p63s²3p4 2 4 6​
Svetlanka [38]

Answer:

we add only the the same highest enegy levels :3s&3p=2+4=6

7 0
2 years ago
The distance from the surface of the earth to the moon is approximately 3.8 * 10 to the 5th km. How many days would a distance l
Alla [95]

Answer:

82 days would take a distance like that, if we drive at 120 mi/h

Explanation:

Distance from Earth to moon is 3.8×10⁵ km

You drive at a speed of 120 mi/h

Let's convert the 120 mi/h to km/h

1 mi = 1.61 km

Then 120 mi . 1.61 km / 1mi = 193.2 km

New velocity is 193.2 km. Therefore,

193.2 km are driven in 1 hour

3.8×10⁵ km woul be driven in (3.8×10⁵ . 1)/ 193.2 = 1966.8 hours

1967 hours . 1 day / 24 hours = 82 days

5 0
4 years ago
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