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
Elis [28]
2 years ago
10

How many meters are in a kilometer.

Chemistry
1 answer:
Anika [276]2 years ago
4 0

Answer:

1,000 meters in 1 kilometer

Explanation:

You might be interested in
2. What is the smallest unit of an organism that is classified as living? *
Leviafan [203]

Answer:

D

Explanation:

The cell is the basic structural, functional and biological unit of all known living organisms. Cells are the smallest unit of life that is classified as a living thing, and are often called the "building blocks of life.

4 0
3 years ago
Read 2 more answers
For a particular reaction, Δ=−111.4 kJ and Δ=−25.0 J/K.
vichka [17]

Answer:

\Delta G =-103.95kJ

Explanation:

Hello there!

In this case, since the thermodynamic definition of the Gibbs free energy for a change process is:

\Delta G =\Delta H-T\Delta S

It is possible to plug in the given H, T and S with consistent units, to obtain the correct G as shown below:

\Delta G =-111.4kJ-(298K)(-25.0\frac{J}{K}*\frac{1kJ}{1000J} )\\\\\Delta G =-103.95kJ

Best regards!

6 0
2 years ago
Why does pressure vary in the atmosphere​
Digiron [165]
Pressure varies in the atmosphere because air molecules are being pulled down towards the center of the earth-hope this helps!
7 0
2 years ago
Pretend that you are the size of an atom, observing a reaction between a potassium atom and a fluorine atom. Write an account of
Crazy boy [7]
 <span>Each atom in an ionic compound tends either to empty or complete the shell to 8 electrons. So when the number of electrons on the external shell is near 8 , the atom tends to attract electrons to complete the shell giving a positive ion called anion 
Conversely when the number of electrons is small the atom gives these electrons to form a positive ion called a cation</span>
7 0
3 years ago
Copper has two naturally occurring isotopes. Cu−63 has a mass of 62.939 amu and relative abundance of 69.17%.
fiasKO [112]
The answer is 64.907 amu.

The atomic mass of an element is the average of the atomic masses of its isotopes. The relative abundance of isotopes must be taken into consideration, therefore:
atomic mass of copper = atomic mass of isotope 1 * abundance 1 + atomic mass of isotope 2 * abundance 2

We know:
atomic mass of copper = 63.546 amu
The atomic mass of isotope 1 is: 62.939 amu
The abundance of isotope 1 is: 69.17% = 0.6917
The atomic mass of isotope 1 is: x
The abundance of isotope 2: 100% - 69.17% = 30.83% = 0.3083

Thus:
63.546 amu = 62.939 amu * 0.6917 + x * 0.3083
63.546 <span>amu = 43.535 amu + 0.3083x
</span>⇒ 63.546 amu - 43.535 amu = 0.3083x
⇒ 20.011 amu = 0.3083x
   ⇒ x = 20.011 amu ÷ 0.3083 = 64.907 amu
7 0
3 years ago
Other questions:
  • At a wastewater treatment plant, FeCl3(s) is added to remove excess phosphate from the effluent. Assume the following reactions
    5·1 answer
  • How might society have been most likely impacted if Nikola Tesla, the inventor of AC technology, had not become a scientist?
    15·2 answers
  • A tissue sample at 275 K is submerged in 2 kg of liquid nitrogen at 70 K for cryopreservation. The final temperature of the nitr
    10·1 answer
  • Is there only one way to conduct a scientific experiment? Explain why or why not.
    14·2 answers
  • If element x has 20 protons, how many electrons does it have
    10·1 answer
  • Chemistry!! Help please!!
    15·1 answer
  • Element with atomic number greater than Oxygen.
    14·2 answers
  • In 2011, the number of transplants in the United States was 26,745, and the number of donors was 14,146. What is most likely the
    15·2 answers
  • - Angel wants to know if the type of detergent has an effect on the cleanliness on her clothes. Hypothesis:​
    11·1 answer
  • 12 Which is an example of a pulley? A.shoes B.fork C.stairs D. a stapler​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!