using the periodic table, find the molar mass of potassium perchlorate (kclo₄). write your answer to the…

using the periodic table, find the molar mass of potassium perchlorate (kclo₄). write your answer to the hundredths place. round if necessary. g/mol

using the periodic table, find the molar mass of potassium perchlorate (kclo₄). write your answer to the hundredths place. round if necessary. g/mol

Answer

Explanation:

Step1: Find atomic masses

From the periodic - table, the atomic mass of K (potassium) is approximately 39.0983 g/mol, Cl (chlorine) is approximately 35.453 g/mol, and O (oxygen) is approximately 15.999 g/mol.

Step2: Calculate molar mass of (KClO_{4})

The molar mass of (KClO_{4}) is the sum of the atomic masses of its constituent atoms. There is 1 K atom, 1 Cl atom, and 4 O atoms. So, (M = 39.0983+35.453 + 4\times15.999). First, calculate (4\times15.999 = 63.996). Then, (M=39.0983 + 35.453+63.996). (M = 138.5473\approx138.55) g/mol.

Answer:

138.55 g/mol