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STACY
Questions (8)
300 hundred people apply for three jobs. 120 of the applicants are women.
(a) If three persons are selected at random, what is
1 answer
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UNDERSTANDING ACCEPTED STANDARDS OF BEHAVIOR WHEN YOU ENTER A NEW CLASSROOM DEMONSTRATES THE PROCESS OF
ADOPTING GROUP NORMS PEER
4 answers
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I Need Someone to check my essay for me and give me some input please.
1 answer
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Posted by STACY on Monday, December 13, 2010 at 7:56pm.
Consider an aqueous solution prepared from 250.0 mL of water and 1.27 g
2 answers
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how many grams of sodium carbonate are needed to prepare 0.250 L of an 0.100 M aqueous solution of sodium ions?
well normally you
2 answers
1,176 views
how many grams of sodium carbonate are needed to prepare 0.250 L of an 0.100 M aqueous solution of sodium ions?
well normally you
3 answers
665 views
Consider an aqueous solution prepared from 250.0 mL of water and 1.27 g of potassium bromide. Express the amount of potassium
2 answers
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NEED TO KNOW ABOUT THE LOST COLONY IN 1585
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Answers (4)
IS THE ANSWER D
Thanks! and No Stacy is not my real name, although Shirley is my mothers name LOL!
I surely do, and don't call me Shirley! LOL yessss i'm sorry I don't know much about chemistry that's why i'm here!! 1. Mass percent= grams solute/100solution 1.27g/250.0mL = 5.08x10^-03 is my answer but the correct one is 0.505% 2. Mole fraction= moles
Soooo Moles= MxL (0.100M)(0.250L)=0.025 than multiply moles by molar mass (0.025)(105.988)= 2.65g So my answer is 2.65g but the book says it's 1.32g? What am I overlooking.....man I hate chemistry =(
