Ionic compounds are composed of a non-metal as the anion and a metal as the cation. Covalent compounds on the other hand are composed of both non-metals from both charges. In this case, OF2 is covalent, PBr3 is covalent, SeO2 is ionic, C5H12 is covalent, and CBr4 is covalent.
First, we need to get the number of moles of NH3:
no.of moles = mass of NH3 / molar mass
when we have the mass= 155g & the molar mass of NH3 = 14+(1x3) = 17 g/mol
∴ no.of moles = 155g/17mol/g
= 9.12 moles
∴ the heat (in Kj) = no.of moles of NH3 * (ΔHrxn/4moles NH3)
= 9.12 moles * (-906 / 4mol NH3)
= -2065.68 KJ
Answer:
2.07 mol O₂
Explanation:
First we need to write down the species present in the chemical equation, using the information given by the exercise:
However this equation <em>is not balanced</em>, so now we<u> balance it</u>:
Now we can use the stoichiometric ratio to <u>calculate the moles of oxygen </u>from the moles of sulfide dioxide:
- 1.38 molSO₂ *
= 2.07 mol O₂
The answer is 4. It can hold 4 sublevels as s.p,d,f and it holds 32 electrons
Reactivity. It is the ability of matter to combine chemically with other substances.
