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
Pani-rosa [81]
2 years ago
7

Select which of the following are used to determine the age of the Earth. Select 3.

Chemistry
1 answer:
saveliy_v [14]2 years ago
7 0

Meteorites discovered on earth

You might be interested in
Answer pls..... how????
Irina-Kira [14]

Answer:

E

C

B

D

A

Explanation:

The definition of words correspond well with the answers I provided and somewhat match with the dictionary definitions.

3 0
3 years ago
PLEASE HELP
AfilCa [17]
I think it’s salt water
7 0
3 years ago
Read 2 more answers
Which of the following contains a nonpolar covalent bond? O2 CO NaCI HF
jasenka [17]

Answer: The nonpolar covalent bond happens in an O₂ molecule.

Explanation: Nonpolar bonds happen where there's no difference between the polarity of the atoms involved. This usually happens when the same atoms bond to each other, which explains why the O₂ molecule is the one who has this bond.

5 0
3 years ago
What is a photon?
vlabodo [156]

Answer:

c

Explanation:

try it I'm 60%sur its this

8 0
3 years ago
A gas within a piston–cylinder assembly undergoes an isothermal process at 400 K during which the change in entropy is −0.3 kJ/K
Karolina [17]

Answer:

W = -120 KJ

Explanation:

Since the piston–cylinder assembly undergoes an isothermal process, then the temperature is constant.

Thus; T1 = T2 = 400K

change in entropy; ΔS = −0.3 kJ/K

Formula for change in entropy is written as;

ΔS = Q/T

Where Q is amount of heat transferred.

Thus;

Q = ΔS × T

Q = -0.3 × 400

Q = -120 KJ

From the first law of thermodynamics, we can find the workdone from;

Q = ΔU + W

Where;

ΔU is Change in the internal energy

W = Work done

Now, since it's an ideal gas model, the change in internal energy is expressed as;

ΔU = m•C_v•ΔT

Where;

m is mass

C_v is heat capacity at constant volume

ΔT is change in temperature

Now, since it's an isothermal process where temperature is constant, then;

ΔT = T2 - T1 = 0

Thus;

ΔU = m•C_v•ΔT = 0

ΔU = 0

From earlier;

Q = ΔU + W

Thus;

-120 = 0+ W

W = -120 KJ

8 0
3 years ago
Other questions:
  • What is the volume of 8.50 moles of hydrogen gas?
    10·1 answer
  • Macbeth informs his wife that
    5·1 answer
  • What is the electron configuration for N (nitrogen)?
    9·1 answer
  • Recall the postulates of kinetic molecular theory read the list and check all the statements that apply to behavior of an ideal
    15·2 answers
  • How is the atomic mass of an element related to a mole?
    7·1 answer
  • PLEASE HELP ASAP ONE MORE QUESTION !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
    8·1 answer
  • 1-calculate the mass of 4 moles of Na
    9·1 answer
  • The atomic mass of an element is measured relative to the mass of *
    14·2 answers
  • What could cause a build up of algae which would decrease the amount of oxygen available for the organisms in the river? protect
    13·1 answer
  • at 530.4 mmhg and 55.3oc, a 3.14-l sample of a hydrocarbon gas has a mass of 2.28 g. what is the formula of the gas?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!