Answer: A
Explanation: the only way to turn it from blue to yellow is to mix it with an acidic solution.
Mole is mass (g) / Molar mass (mole/gram)
So to find mass in gram multiply the no.mole by Molar mass
Answer:
by adding water into the mix
Explanation:
this will dissolve the salt
Answer:
-74.6 kj/mol
Explanation:
you can see the answer at the pic
Answer:
The approximate mass of beryllium is 9.0045 u.
Explanation:
Given data:
mass of helium= 4.002 u
mass of beryllium which is 2.25 times of mass of helium= ?
Solution:
we will multiply the mass of helium with 2.25 times,
4.002 u × 2.25 = 9.0045 u
so the mass of beryllium atom would be 9.0045 u.
