1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Aleksandr [31]
3 years ago
6

In a photoelectric experiment a student uses a light source whose frequency is greater than that needed to eject electrons from

a certain metal. However, after continuously shining the light on the same area of the metal for a long period of time the student notices that the maximum kinetic energy of ejected electrons begins to decrease, even though the frequency of the light is held constant. How would you account for this behavior?
Chemistry
1 answer:
Marysya12 [62]3 years ago
3 0

Answer:

Explanation:

Based on the scenario being described it seems that this is due to the later ionization energies, namely the 2nd, 3rd etc... seem to be much higher than the first. Therefore this causes an excess amount of energy to be used in order to remove the electrons, thus causing less energy to be left after the process is over. This would be the best explanation for this behavior.

You might be interested in
What is required for electricity to flow? Explain.
Bond [772]
Potential differences between the ends of a circuit. Electrons flow from high potential to low potential.
6 0
4 years ago
What is the density of a solid that has a mass of 100g and a volume of 25mL.?
Arte-miy333 [17]

Answer:

D = 4 g/mL

General Formulas and Concepts:

Density = Mass over Volume

  • D = m/V

Explanation:

<u>Step 1: Define</u>

m = 100 g

V = 25 mL

D = unknown

<u>Step 2: Find D</u>

  1. Substitute:               D = 100 g/25 mL
  2. Evaluate:                  D = 4 g/mL
7 0
3 years ago
What is the coefficient for O2 in the balanced version of the following chemical equation: C2H4+O2→CO2+H2O
andriy [413]

Answer:

3

Explanation:

Here's the balanced equation;

C2H4 + 3O2 → 2CO2 + 2H2O

C ⇒2                          C ⇒1 x 2 = 2

H ⇒4                          H ⇒2 x 2 = 4

O ⇒3 x 2 = 6             O ⇒ (2 x 2) + (2 x 1) = 6

6 0
3 years ago
A compound with molecular formula C4H8O2, shows absorptions at 2500-3300 cm-1 (broad), 1720 cm-1 and at 1200 cm-1 on the IR spec
xxMikexx [17]

Answer:

Butanoic Acid:

I have attached the structure of Butanoic Acid. Please refer to the attachment.

Explanation:

Solution:

First of all, we need to calculate the double bond equivalent (DBE) for the compound given:

Compound = C4H8O2

DBE = (C +1) - (H + X - N)/2

C = no. of carbons

H = no. of Hydrogen

X = no. of Halogens

N = no. of Nitrogen

DBE = (4+1) - (8/2)

DBE = 5-4

DBE = 1

It indicates the presence of 1 double bond in the possible structure.

Further structure can be identified by looking the peak values of the spectrum. So, we have,

2500 - 3300 = it indicates the presence of -COOH group

1720 = it indicates the (C=0) stretching  

1200 = It indicates the (C-O) stretching

SO, the possible structure is

Butanoic Acid:

I have attached the structure of Butanoic Acid. Please refer to the attachment.

7 0
3 years ago
Explain why a mole is a special number?
RoseWind [281]
A mole is a unit used to convert between the number of atoms and grams in an element. The information given on the periodic table is based on a mole or 6.02 *10^23 atoms of the element.
3 0
3 years ago
Other questions:
  • Tia has a sample of pure gold (Au). She weighed the sample and the result was 62.4 grams. Tia wants to determine the number of a
    9·1 answer
  • Which of the following bonds is the strongest? H-H N-N C-C C=O
    5·2 answers
  • If a molecule can hydrogen bond, does it guarantee that it will have a higher boiling point than a molecule that cannot? Explain
    11·1 answer
  • According to the following balanced reaction, how many moles of HNO3 are formed from 8.61 moles of NO2 if there is plenty of wat
    5·1 answer
  • Hydrogen bonds form between neighboring water molecules because of ________. A. electron transfer B. electron sharing C. the vis
    5·1 answer
  • Is conducts electricity a metal or nometals
    5·1 answer
  • I need help please don’t troll or I’ll report.
    13·1 answer
  • You took a can of soda out of the refrigerator. After holding the can for a minute, how does your hand feel? Explain what happen
    8·1 answer
  • HELP PLZ!!! 37. Which of the following most accurately describes what the pH scale measures?
    5·1 answer
  • What would you use to measure the height of a sample?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!