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
Kamila [148]
3 years ago
11

How much energy does an X-ray with an 8 nm (8 x 10-9m) wavelength have?

Chemistry
1 answer:
myrzilka [38]3 years ago
3 0

Answer:

it would be option C

Explanation:

Speed of light = 3×10^8m/s

Planck's constant = 6.626×10^-34 Js

Wavelength = 8 x 10^-9 m

Energy = [(3×10^8) * (6.626×10^-34)] / 8 x 10^-9

Energy = [19.878×10^(8-34)] / 8 x 10^-9

Energy = 2.48475 × 10^(-26+9)

Energy = 2.48×10^-17 J

You might be interested in
A gold-colored ring has a mass of 17.5 grams and a volume of 0.82 mL. What is the density of this ring?
max2010maxim [7]

Answer:

21 g/mL

Explanation:

To solve this problem, first look at the density equation, which is D=M/V, which D stands for density, M stands for mass, and V stands for volume. When you substitute in the variables, you get D=17.5/.82, which is equivalent to 21.34. However, since we need to pay attention to the sig fig rules for multiplying, we need to have the same amount of sig figs as the value with the least amount of sig figs, which is the number .82. .82 has two sig figs, so you round down. Your answer will be 21 g/mL.

4 0
3 years ago
What is the decay mode of radium-226?
inn [45]

Answer:

Radium-226 is a radioactive decay product in the uranium-238 decay series and is the precursor of radon-222. Radium-228 is a radioactive decay product in the thorium-232 decay series. Both isotopes give rise to many additional short-lived radionuclides, resulting in a wide spectrum of alpha, beta and gamma radiations.

6 0
3 years ago
About 75% of living matter is made up of which two essential chemicals?
lions [1.4K]

calcium,phosphorus,potassium,and sulfer

3 0
4 years ago
Read 2 more answers
In order to calculate the mass of an element in a given mass of a compound the mass of the compound is multiplied by the mass
Allushta [10]
Molar mass is the mass of a given substance divided by the amount of that substance, measured in g/mol.
7 0
3 years ago
How many grams of butane can be burned by 1.42 moles of oxygen?
Mrrafil [7]

Answer:

So the molar mass of C4,H10 is

58.12g mole -1

6 0
3 years ago
Other questions:
  • A) Moles of CO2 required to inflate 160-L front passenger-side air bag at room temperature and pressure
    14·1 answer
  • Which of the following organelles is best compared to a post office? 1.Endoplasmic reticulum 2.Golgi apparatus 3. Nucleus 4. Cel
    14·1 answer
  • Which of the following are dipole-dipole interactions that occur only between molecules containing N-H, O-H or F-H bonds?
    13·2 answers
  • 2+2 because i really know im just trying something real quick
    15·2 answers
  • CFx where x stands for a whole number. Measurements also show that a certain sample of the unknown compound contains 8.5 mol of
    12·1 answer
  • SECTIONA ANSWERALL QUESTIONS (5 MARKS PER QUESTION) 1:03 mixing a solution of silver nitrate and dilute hydrochloric acid a whit
    6·1 answer
  • How could the winds flowing in a certain direction affect air masses and where they may collide?
    10·1 answer
  • What common substance can be used to neutralize a spilled acid.
    10·1 answer
  • C) Which one of the following compounds will react with perrhenic acid? Tick one box.
    13·1 answer
  • Ammonia, NH3(g), can be used as a substitute for fossil fuels in some internal combustion
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!