Answer:
- 53 protons
- 131g
- Iodine
- Halogens
Explanation:
atomic no. = no. of protons
= 53 proton
mass = no. of protons + no. of
neutrons
= 53 + 78
= 131
Answer:
They had a negative charge
Explanation:
Answer:
The oxidation number of an atom is the charge it appears to have when you count the electrons according to some arbitrary rules. The oxidation number of an atom depends on the other atoms in the substance.
Explanation:
For example, In KCl, the oxidation number of Cl is 0.
33.33 grams of CH4 would be formed from 25 g C.
C + 2H2 → CH4
from given reaction we can say that ,
2 moles of hydrogen is required for 1 mole of carbon and these will react to form 1 mole of methane.
atomic mass of Carbon = 12 gm
Molecular mass of H2 = 2(H)
= 2(1)
=2gm
moles = molecular mass / given mass
for C,
if 12 gm = 1 mole
then 25 gm = ? mole
=2.083 moles
1 mole of C will produce 1 moles of CH4
so, 2.083 moles of C also will produce 2.083 moles moles of CH4
molecular weight of methane= C+4(H)
= 12+4(1)
= 16 gm
amount of methane produced= moles × molecular mass
=2.083× 16
= 33.33 gm
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