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
just olya [345]
3 years ago
6

Which of the following is a compound? a. iron b. lead c. helium d. methane

Chemistry
1 answer:
Lana71 [14]3 years ago
6 0
The correct answer is d) methane (CH_4)

The other options are elements.
You might be interested in
Which would best help will give brainlist first 1
son4ous [18]
It would definitely be hand lense
3 0
3 years ago
Read 2 more answers
Select the letter of a category on which you should focus when proofreading.
oee [108]
B. Who, what, when, where, why, and how. Those are the most important and key componants in a story.
8 0
3 years ago
Molecules have ionization energies, just like atoms do. The ionization energy for molecular oxygen, for example, is 1314 kJ/mol.
taurus [48]

Answer:

91.1835 nm

Explanation:

Given that the ionization energy of the oxygen molecule = 1314 kJ/mol

It means that

1 mole of oxygen molecules can be ionized by the energy = 1314 kJ = 1314000 J

1 mole of molecules contains 6.022 × 10²³ atoms

So,

6.022 × 10²³ atoms of oxygen molecules can be ionized by the energy = 1314000 J

1 atom require \frac{1314000}{6.022\times 10^{23}}\ J of energy

Energy = 2.18\times 10^{-18}\ J

Also

E=\frac {h\times c}{\lambda}

Where,  

h is Plank's constant having value 6.626\times 10^{-34}\ Js

c is the speed of light having value 3\times 10^8\ m/s

\lambda is the wavelength

So,

\lambda=\frac {h\times c}{E}

\lambda=\frac{6.626\times 10^{-34}\times 3\times 10^8}{2.18\times 10^{-18}}\ m

\lambda=91.1835\times 10^{-9}}\ m

Also,

1\ nm=10^{-9}}\ m

So, wavelength = 91.1835 nm

6 0
3 years ago
Help me with this question?!!
Ne4ueva [31]

Answer:

Glow sticks  and match would be light emission, slime would be preciptate, and cookies would be gas.

Explanation:

5 0
3 years ago
Plz hurry fast I need help !!!
Vikki [24]

Answer:

USE SOCRATIC

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • Consider the reaction. c2h5oh(l)⟶ c2h6(g)+12o2(g). state what further data would be needed to obtain δrh∘ at 500∘c and 1 bar.
    6·1 answer
  • Which 0.1 M aqueous solution is the best conductor of electricity /12561947/e9552934?utm_source=registration
    7·1 answer
  • Can someone help me on this please ?
    12·1 answer
  • Determining Density and Using Density to Determine Volume or Mass
    11·1 answer
  • Which of the following would have the highest buffer capacity?
    10·1 answer
  • You have a glass of water with a volume of 250 mL and a temperature of 12 degrees Celsius. You add a piece of dry ice, CO2(s), w
    5·1 answer
  • what is the change in the velocity of the biker below as he travels from point b to point c ? ..... What is his acceleration fro
    14·1 answer
  • Write a paragraph on: how Westfield how the rust in their water formed.
    5·1 answer
  • BALANCE THIS EQUATION:<br> C4H10 + O2 = C02 + H20
    8·1 answer
  • Condensed structural formula of benzoic acid
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!