Answer:
Halide ions are produced when atoms of elements in Group 7A gain an electron.
Explanation:
Answer:
1s2 2s2 2p6 3s2 3p6 3d4 4s2
Explanation:
Cobalt has twenty seven electrons hence Co3+ has twenty four electrons. It has lost three electrons from its valence shell. In filling the orbitals, we keep in mind that the energy of the 4s level is higher than that of the 3s level when a transition metal forms a complex hence the 4s is filled before the 3s level as shown in the answer above.
The proton has a positive charge and the election balances out the proton by being negatively charged. The neutral charge, meaning it is neither positively or negatively charged. A good way to remember is to think that the neutron is neutral.
Molar mass of O2= 16.0 g/mol
molar mass of H2O= 18.0 g/mol
10.0 g of O2= 5 mol
80.0 g of H20= 5 mol
you need twice as the moles of H2 as O2 so there is insufficient H2 and it is the limiting reactant and all of it will react therefore 5.00 moles of H2 with 2.5 mole of O2 to produce 5.00 moles H2O
5.00 moles of H2O is 5.00x18.00=90.00 g
so the answer is 90.00
