How many moles is 5.38 x 10^21 atoms of sodium

The answer is

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

From the question

N = 5.38 × 10²¹ atoms of sodium

We have

We have the final answer as

Hope this helps you

the answer is b. dilution

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.