Which of the following equation is a correct balanced hydration equation for the hydration of Na2SO4?
A) 
B) 
C) 
D) 
Correct Answer:
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Q18: Which one of these substances will exist
Q19: Which of the following is an example
Q20: Which of the following is an example
Q21: How many equivalents of Li+ are present
Q22: How many equivalents of Mg+2 are present
Q24: What is 75% of 375?
A)281
B)28,125
C)2)81
D)0)281
Q25: 45 is what percent of 150?
A)0)30
B)30
C)0)0030
D)3000
Q26: Calculate the mass percent of a solution
Q27: What is the percent mass/volume (%m/v)of a
Q28: What is the %v/v concentration of a
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