Wednesday
June 19, 2013

# Posts by TutorCat

Total # Posts: 706

Chemistry
volume = (length)*(width)*(height) density= mass/ volume

chemistry
opps yes your formula is correct!

chemistry
The correct formula: q = mcΔT or c = q/[(m)(ΔT)] http://chemistry.about.com/od/workedchemistryproblems/a/Specific-Heat-Example-Problem.htm

CHEMISTRY
This link is helpful: http://chemistry.csudh.edu/faculty/noel/CHE317L/Extraction%20Experiment.htm read up to X = 8.0 grams of A extracted into the ether. For your question, you would subtract x from 9.81g after you solve for x.

chemistry
volume of sphere = 4/3 π r^3 density = mass/volume

chemistry
1)look at the units. see how this cancels out to give you columb, the SI unit of quantity of electric charge (columb/sec)*(sec) = ? columb 2) divide ? columb by charge on an electron

Chemistry
molality = moles of solute/kilograms of solvent notice how the units cancel out to moles of solute: (moles of solute/kg of solvent)*(kg)= moles of solute

Biology
Molarity (M) = mol / liter = moles/ 1000ml Therefore, 0.8M = 0.8 mol/ 1000 ml Know that the units cancel out to mol: (0.8 mol/1000 ml)*(150ml) = ? mol if you multipy ? mol by the molar mass of NaCl , you would end up with grams of NaCl (? mol)*(__ g/ mol)= ___g NaCl

Chemistry
http://www.jiskha.com/display.cgi?id=1347138502

chemistry
Read Freezing Point Depression Section: http://www.chemistryexplained.com/Ce-Co/Colligative-Properties.html

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