Protons=33 / electrons:42
We are given with an element Iron, Fe, with a mass of 235.45 g. We are tasked to solve for its corresponding molar mass in mol. We need to find first the molecular weight of Iron, that is
Fe= 55.845 g/mol
With 235.45 g sample, its corresponding mol is
mol Fe= 235.45 g x 1 mol/55.845 = 4.22 mol Fe
Therefore, molar mass of Iron is 4.22 mol
Answer:
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Explanation:
Research for alternative energy sources have been positively affected, because of other reasons (excluding those EliteAnswers listed), such as:
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hope this helps
Answer:
Li⁺, Na⁺ (group 1); N⁻³ (group 15)
Explanation:
Li and Na belong to group 1 of the periodic table so they coincide in the valence electrons which, being group 1, is a single electron.
They are very willing to lose it because they have little electronic affinity. In addition, both elements enter the alkali metal group (all of group 1)
They are cations, as they make ionic bonds.
N is an element from group 15. It is a nonmetal and has 5 electrons in its last layer as all the elements that make up its group, P, As, Sb so it would subtract 3 more electrons to have its last complete level and thus reach noble gas configuration.
Nitrogen can make covalent bonds, for example with O, where they form anions because it can gain electrons.
