What is the hydrogen ion concentration of a 0.2 N solution of acetic acid if the dissociation is only 1%?
A. 0.002 mol/L H+
B. 0.02 mol/L H+
C. 2 mol/L H+
D. 0.2 mol/L H+
Answer: A
Mathematics
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Find the number of ways to get the following card combinations from a 52-card deck.If two cards are drawn from a 52-card deck without replacement, in how many different ways is it possible to obtain a heart on the first draw and an ace on the second?
A. 51 ways B. 50 ways C. 3 ways D. 48 ways
Mathematics
Provide an appropriate response.Change 
to a decimal.
A. 9.75 B. 1.875 C. 0.975 D. 0.1875
Mathematics
Write the word phrase as an algebraic expression. Use x to represent the unknown number.The difference of a number and 72
A. 72x B. x - 72 C. 72 D. 72 - x
Mathematics
Use properties of real numbers to calculate the expression mentally.
? 
? 
? 
? 
A. 1
B. 
C. 
D. 4
Mathematics