CHEMISTRY

Comments

• ebnyasoo3

  September 2010

  Hello Just be me
  
  I am getting my bachelors in Chemical Engineering.
  So I can try to help you as much as possible.
  
  What is your question.
  Ebnyasoo3
• Just Be Me

  September 2010

  oh THANK YOU ebnyasoo
  ok so i have a "honors" question according to my teacher:
  
  the density of mercury is 13.6 g/ml
  calculate the volume of 3.56 grams of mercury.
  calculate the mass of mercury occupying a volume of 50.0 cm cubed.
• Hezekiel

  September 2010

  Always be careful with the units and significant figures in these type of calculations!!..
  
  For part 1) Use the formula --V=M/D (The answer should be in the form 'ml" for volume (divide by density ;the g cancel each other out and you r left with 'ml')
  
  For part 2) Use the equation M= V x D
  
  In this case you already know the density of mercury =13.6 g /ml and Volume  is given=50.0 cm
  
  Do the calculation and use g (grams) as unit for mass..
  
  But wait until ebenyasoo confirms it for you..I am just guessing..
• roubir2010

  September 2010

  no man ur good thats the right answer
  pharmacy student
• ebnyasoo3

  September 2010

  Hezekiel it seems that you are good at this stuff.
  
  
  
  One thing to add is that in the second one the problem gave you the volume in cm cubic and we have the density in g/ml
  But since 1 ml = 1 cm cubic, then you don't have to worry about converting.
  
  Thank you Hezekiel for doing all the work.
  In Christ
  Ebnyasoo3
  
• Just Be Me

  September 2010

  oh thanks guys... no really thanks for taking the time-my teacher has a "no questions" policy, even if you stay after school hehe
  
  anyways, i just checked my test grade and i got an A!! i just want to say that that's a miracle (long story)...but all credit goes to Saint Ebaskharayon (i hope that's how you spell it)-any student who reads this needs to ask for this Saint's help in any classes-he's always there for me.
  
  God bless