Answer:
All unexpected changes: color change (two clear liquids make purple), temperature change, Odor change or formation, precipitate formation (solid forms), and the production of gas.
Explanation:
C. because a color change can occur due to chemicals mixing, but it can also be a physical change because you can see it happen with your eyes.
Answer:
There are 1.253*10²⁴ particles in 2.080 moles
Explanation:
Avogadro's number is called the number of particles that make up a substance (usually atoms or molecules) that can be found in the amount of one mole. In other words, Avogadro's number is the number of molecules that one mole of any substance contains. Its value is 6.023 * 10²³ particles per mole.
So, you can apply a rule of three as follows: if 1 mole has 6.023*10²³ particles, then 2.080 moles, how many particles does it have?
![amount of particles=\frac{2.080 moles*6.023*10^{23}particles }{1 mole}](https://tex.z-dn.net/?f=amount%20of%20particles%3D%5Cfrac%7B2.080%20moles%2A6.023%2A10%5E%7B23%7Dparticles%20%7D%7B1%20mole%7D)
amount of particles= 1.253*10²⁴ particles
<u><em>There are 1.253*10²⁴ particles in 2.080 moles</em></u>
You spelled calendar incorrectly, the correct spelling is the one I previously wrote...Calendar
Answer:
a
Explanation:
the bond is shared between the atoms because whith out it you cant have one