What is the mass % of oxygen in a 50.0 g sample of water?

Explanation:

The percent composition of a compound is the percent of total mass made up by a ... data for a reaction of iron and oxygen which produces an iron oxide compound. ... 80.0 g sample of a compound that was 20.0 g element X and 60.0 g element y then the ... How can I calculate the percent composition of water in a hydrate?

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.