What is the definition of a lewis acid? a substance that accepts electrons to form a covalent bond a substance that donates electrons to form a covalent bond a substance that accepts a proton a substance that donates a proton

Option (a) is the correct answer.

Explanation:

Lewis acid are the species which readily accept an electron pair.

Thus, a substance that accepts electrons to form a covalent bond is the definition of a Lewis acid.

For example,    +          

       Lewis acid      Lewis base   covalent bond formed

Whereas the species or substances that donates electrons to form a covalent bond are known as lewis bases.

a patient chooses to not take a beneficial medical treatment.

explanation:

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 :