As we know that there are avogadro no. of atoms in 9 g of beryllium.
1 mole of beryllium = 6.02 * 10^23 atoms
so 2.5 mole= 6.02*10^23*2.5 i.e = 15.055 × 10^23 atoms

8 0

3 years ago

Step 4: Measuring the Volume of Air Near 0°C

aliya0001 [1]

Answer: It's all in the screenshot

Explanation: Got it right on edg

7 0

3 years ago

Read 2 more answers

____________ are solutions that resist changes in ph when moderate amounts of acids or bases are added and contain ions or molec

Kaylis [27]

Buffers are solutions that resist changes in ph when moderate amounts of acids or bases are added and contain ions or molecules that react with oh- or h when these ions are introduced into solution.

5 0

3 years ago

In a water molecule, what type of bond forms between the oxygen and hydrogen atoms

goldenfox [79]

Covalent bond forms between the oxygen and hydrogen atoms.

(I attached a picture that could help)

-Hope that helps,
Good luck!

7 0

3 years ago