Asample of ammonia has a mass of 82.9 g. how many molecules are in this sample?

Explanation: To calculate the moles, we use the equation:

Given mass of ammonia given = 82.9 g

Molar mass of ammonia = 17 g/mol

Putting values in above equation, we get:

According to Avogadro's law,

1 mole of any substance contains avogadro's number   of particles.

Thus 4.87 moles of ammonia contains= of ammonia.

the answer would be a

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.