Multiple Choice
How many fluorine atoms are present in 135 g of CF2Cl2?
2. Atoms & Elements
Calculating Molar Mass
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What is the molar mass of sodium acetate trihydrate (NaC2H3O2·3H2O)?
A
166.10 g/mol
B
136.08 g/mol
C
142.04 g/mol
D
180.18 g/mol
Verified step by step guidance1
Identify the chemical formula for sodium acetate trihydrate: NaC₂H₃O₂·3H₂O.
Determine the molar mass of each element in the compound using the periodic table: Na (22.99 g/mol), C (12.01 g/mol), H (1.01 g/mol), and O (16.00 g/mol).
Calculate the molar mass of sodium acetate (NaC₂H₃O₂) by adding the molar masses of its constituent elements: Na (1 x 22.99 g/mol) + C (2 x 12.01 g/mol) + H (3 x 1.01 g/mol) + O (2 x 16.00 g/mol).
Calculate the molar mass of the water of hydration (3H₂O) by adding the molar masses of its constituent elements: H (6 x 1.01 g/mol) + O (3 x 16.00 g/mol).
Add the molar mass of sodium acetate and the molar mass of the water of hydration to find the total molar mass of sodium acetate trihydrate.
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