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
Nikolay [14]
3 years ago
11

HELP FAST!!!!!!! So stressed out :( please help fast.

Chemistry
2 answers:
matrenka [14]3 years ago
4 0
Ultraviolet light has higher frequency and higher radiant energy.

Look up a chart on electromagnetic radiation if you need further help.
Contact [7]3 years ago
3 0
I think it would be C- unltraviolet light has both a higher frequency and a higher radiant energy than visible light
You might be interested in
A 0.150-kg sample of a metal alloy is heated at 540 Celsius an then plunged into a 0.400-kg of water at 10.0 Celsius, which is c
Zarrin [17]

Answer:

C_{alloy}=0.497\frac{J}{g\°C}

Explanation:

Hello there!

In this case, according to this calorimetry problem on equilibrium temperature, it is possible for us to infer that the heat released by the metal allow is absorbed by the water for us to write:

Q_{allow}=-(Q_{water}+Q_{Al})

Thus, by writing the aforementioned in terms of mass, specific heat and temperature, we have:

m_{alloy}C_{alloy}(T_{eq}-T_{alloy})=-(m_{water}C_{water}(T_{eq}-T_{water})+m_{Al}C_{Al}(T_{eq}-T_{Al})

Then, we solve for specific heat of the metallic alloy to obtain:

C_{alloy}=\frac{-(m_{water}C_{water}(T_{eq}-T_{water})+m_{Al}C_{Al}(T_{eq}-T_{Al})}{m_{alloy}(T_{eq}-T_{alloy})}

Thereby, we plug in the given data to obtain:

C_{alloy}=\frac{-(400g*4.184\frac{J}{g\°C} (30.5\°C-10.0\°C)+200g*0.900\frac{J}{g\°C}(30.5\°C-10.0\°C)}{150g(30.5\°C-540\°C)} \\\\C_{alloy}=0.497\frac{J}{g\°C}

Regards!

3 0
3 years ago
Metallic crystals are excellent conductors of electricity due to the existence of positive and negative ions.
My name is Ann [436]

the answer is FALSE


4 0
3 years ago
Read 2 more answers
What is the ultimate end of a high mass star that has a core about 2.8x the mass of our sun?
jolli1 [7]

Answer:

A

Explanation:

It is formed after the star has ended its star cycle into a supernova. The star collapsed into a neutron star that is smaller than the progenitor star but has inherited angular momentum. IT, therefore, spins faster emitting electromagnetic radiation that seems to pulsate.

5 0
3 years ago
Read 2 more answers
The number of protons in the nucleus is always equal to the number of neutrons. True or False?
vekshin1
False. The number of neutrons can be more or less than the number of protons.
7 0
3 years ago
Read 2 more answers
24. 00 ml of a 0. 25 m naoh solution is titrated with 0. 10m hcl. What is the ph of the solution after 24. 00 ml of the hcl has
12345 [234]

pH of the solution after 24. 00 ml of the hcl has been added is 12.87

millimoles NaOH = mL x M = 24.00 mL x 0.25 M = 6.00

millimoles HCl = 24.00 mL x 0.10 M = 2.40

total volume = 48.00 mL

.................................NaOH + HCl ==>NaCl + H2O

initial.........................6.00.........0............0.........0

added.....................................2.40............................

change.................... -2.40......-2.40.........+2.40.... +2.40

equilibrium.................3.60.........0..............2.40.......2.40

The NaCl contributes nothing to the pH of the final solution. The pH is determined by the excess of NaOH present. (NaOH) = millimoles/mL = 3.60/48.00 = 0.075 M = (OH^-)

pOH = -log (OH^-). Then

pOH = -log (0.075)

pOH =1.1249

As we know,

pH + pOH = pKw = 14.00

pH=14-pOH

pH=14-1.1249

pH=12.87

<h3>What is pH?</h3>

pH is a logarithmic measure of an aqueous solution's hydrogen ion concentration. pH = -log[H+], where log is the base 10 logarithm and [H+] is the concentration of hydrogen ions in moles per liter.

The pH of an aqueous solution describes how acidic or basic it is, with a pH less than 7 being acidic and a pH greater than 7 being basic. A pH of 7 is regarded as neutral (e.g., pure water). pH values typically range from 0 to 14, though very strong acids may have a negative pH and very strong bases may have a pH greater than 14.

Learn more about pH:

brainly.com/question/491373

#SPJ4

7 0
1 year ago
Other questions:
  • If the specific heat capacity of water is 4.19 J/(g⋅K), how much energy would be required to raise the temperature of 100.0 g of
    9·1 answer
  • Chemical equation for SO + H2O
    7·1 answer
  • Can anyone help me with this?
    15·1 answer
  • Earthquakes change the surface of the Earth. Write a response analyzing how the author of "Earthquakes" used cause and effect to
    5·1 answer
  • Which of the following is physical change!?
    5·1 answer
  • What is the name of a loop that electricity flows through?
    10·2 answers
  • What is the cost in dollars for the nails used to build a fence 80 meters long if it requires 30 nails per meter? There are 40 n
    9·1 answer
  • Who is the father of phycis<br>​
    11·2 answers
  • Which of the following is NOT a true about atomic mass?
    6·1 answer
  • Fossils are the preserved remains or traces of an organism that used to be alive.
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!