The correct answer is option A, that is, N₂O has 2 nitrogen atoms, whereas NO has only one.
A molecule with the formula NO comprises one oxygen atom and one nitrogen atom, while the molecule with the formula N₂O comprises two nitrogen atoms and one oxygen atom.
Its B homie i took the test !
Answer:
0.87mole
Explanation:
The reaction equation is given as;
4Fe + 3O₂ → 2Fe₂O₃
Number of moles of Fe₂O₃ in 138.5g
To solve this problem;
Number of moles =
Molar mass of Fe₂O₃ = 2(56) + 3(16) = 160g/mol
Now;
Number of moles = = 0.87mole
Answer:
This is a popular question because it is important. You have 2 Major kinds of substances, or compounds, ionic, and covalent. Covalent compounds usually do not “break apart” in solution, (in fact you have to try and find the right ones to do this), BUT, the IONIC compounds, like salts, held together by their opposite charges do tend to separate in solution.
Take NaCl, sodium chloride. Add waster, and you get Na+ and Cl-. Now if we add methanol, a poisonous alcohol, it simply remains together as it is diluted in water. It is a Covalent compound, where all of the atoms of CH3OH share their electrons, which is very different than being held together by opposite charges.
Explanation: