Question Detail

CHM 101 CHM 101 Past Questions Objective Question
Take CBT

Question

Which of the following has a molar mass closest to 97.99 g/mol?
Options
A H₃PO₄
Correct Answer
B H₂SO₄
C NaCl
D NH₃
Correct Answer

Option A is the correct answer.

Detailed Explanation

Molar mass H₃PO₄ = (3×1.01) + 30.97 + (4×16.00) = 3.03 + 30.97 + 64.00 = 98.00 g/mol. H₂SO₄ = 98.09 g/mol, NaCl = 58.44 g/mol, NH₃ = 17.03 g/mol. H₃PO₄ is closest to 97.99.

Hint

Calculate the molar mass for each compound and compare to the given value.

Question Info

Course: CHM 101
Topic: CHM 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 352 of 1872
Previous Course Details Next