10.0 mL of a 0.320 M KBr solution are diluted to a total volume of 1.50 L. What is the concentration of KBr in the resulting solutic O.0.48 M O 48.0 M O 0.00213 M O 0.00417 M

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Chapter2: Atoms, Molecules, And Ions
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W 96'6 O
Question 18
10.0 mL of a 0.320 M KBr solution are diluted to a total volume of 1.50 L. What is the concentration of KBr in the resulting solution?
0.0.48 M
O 48.0 M
O 0.00213 M
O 0.00417 M
Question 19
55.0 mL of 0.500 M lead(II) nitrate (FW = 331.2) is reacted with excess potassium sulfide aqueous solution. Calculate the quantity c
lead(II) sulfide (FW 239.3) precipitated in this reaction.
Pb(NO3)2(aq) + K2S(aq) → PbS(s) + 2 KNO3(aq)
O 0.658 g
Transcribed Image Text:W 966'0 O W 96'6 O Question 18 10.0 mL of a 0.320 M KBr solution are diluted to a total volume of 1.50 L. What is the concentration of KBr in the resulting solution? 0.0.48 M O 48.0 M O 0.00213 M O 0.00417 M Question 19 55.0 mL of 0.500 M lead(II) nitrate (FW = 331.2) is reacted with excess potassium sulfide aqueous solution. Calculate the quantity c lead(II) sulfide (FW 239.3) precipitated in this reaction. Pb(NO3)2(aq) + K2S(aq) → PbS(s) + 2 KNO3(aq) O 0.658 g
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