What best explains the formula unit for a compound made from fluorine and hydrogen? 1. HF, because fluorine is short of one electron, and hydrogen is in excess of one electron
2. HF, because both fluorine and hydrogen are capable of forming only one covalent bone
3. H2F, because fluorine is short of two electrons, and hydrogen is short of one electron
4. H2F, because fluorine is capable of forming one, and hydrogen is capable of forming two covalent bonds

2)HF bcz both fluorine and hydrogen are capable of forming only one covalent bond

Explanation:

flourine is short one electron to become stable while hydrogen has only one electron.Hydrogen cant give out its one electron fully thus it will share its one electron with flourine

answer: the value of enthalpy change will be -152.80 kj.

solution:

pressure = 1atm , temperature = = 298 k

given that pressure and temperature are same in both gases , the number of moles of both gases can be determined by the ideal gas equation.

according to reaction 3 moles no are reacting with 1 mol of ,then 0.49 mol of no will react with moles of ozone that is 0.16 moles of ozone. since, no is limiting reagent and is an excessive reagent.

enthalpy change for the reaction between the given volumes of the gases is :

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