Here is what I have come up with, and I have used Mariam Webster for the definitions.
Answer:
Atomic mass of iron is 55.9 amu.
Explanation:
So gram atomic mass of iron is 55.9 grams. Now we know the formula No. of moles = Given weight/ Molar Atomic weight. So, no. of moles = 65/55.9 No. of atoms = no. of moles x Avogadro number.
Explanation:
1.
YES
K2SO4(aq) + Ba(NO3)2(aq) --> Ba(SO4)2(s) + 2KNO3(aq)
Net ionic equation
2SO4^2-(aq) + Ba2+(aq) --> Ba(SO4)2(s)
2.
NO
No precipitate is formed because KNO3, MgSO4, K2SO4 and Mg(NO3)2 all are soluble.
3.
YES
BaCl2(aq) + Na2(SO4)(aq) --> BaSO4(s) + 2NaCl(aq)
Net ionic equation:
Ba2+(aq) + SO4^2-(aq) --> BaSO4(aq)
4.
Ni2+(aq) + S2-(aq) ---> NiS(s)
