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When 2.61 g of solid Na2CO3 is dissolved in sufficient water to make 250. mL of solution, the concentration of Na2CO3 is:


A) 0.0246 M
B) 10.4 M
C) 0.205 M
D) 0.0985 M
E) 0.141 M

F) A) and C)
G) A) and D)

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In an acid-base (neutralization) reaction the equivalence point is the point where the indicator changes color.

A) True
B) False

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Reduction is the loss of electrons.

A) True
B) False

Correct Answer

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In both of the following reactions, a precipitate is formed. Complete and balance the equations, showing the phases of the products. a. BaCl2(aq) + Na2SO4(aq) b. Mg(NO3)2(aq) + KOH(aq)

Correct Answer

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a. BaCl2(aq) + Na2SO4(aq) F1F1F1S...

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