2h2 + o2 → 2h2o

how many moles of oxygen (o2) are required to react completely with 1.67 mol h2?

Answer : The number of moles of required are 0.835 moles.

Explanation : Given,

Moles of = 1.67 moles

The given balanced chemical reaction is,

By the stoichiometry we can say that, 2 moles of hydrogen gas react with 1 mole of oxygen gas to give 2 moles of water as a product.

From the balanced reaction we conclude that,

As, 2 moles of react with 1 mole of

So, 1.67 moles of react with mole of

Therefore, the number of moles of required are 0.835 moles.

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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.