Number of results: 34,249
Is it possible to calculate the value of the solubility product constant without being given any concentrations?
Saturday, April 23, 2011 at 6:47pm by Paul
CaCO3 ==> Ca^2+ + CO3^2- Look up Ksp. Ksp = (Ca^2+)(CO3^2-) Set up an ICE chart and solve for solubility CaCO3. That value will be in moles/L. Multiply by molar mass to obtain grams/L. Then convert to volume necessary to hold 100 mg. Post your work if you get stuck.
Sunday, April 24, 2011 at 9:12pm by DrBob222
Barium sulfate forms as a precipitate in the following reaction: Ba(NO3)2 (aq) + Na2SO4 (aq) -> BaSO4 (s) + 2NaNo3 (aq) When 35.0g of Ba(nO3)s is reacted with excess Na2SO4, 29.8g of BaSO4 is recovered by the chemist. a) Calculate the theoretical yield of BaSO4. b) ...
Tuesday, April 26, 2011 at 7:57pm by Anonymous
An aqueous solution containing 35.1 grams of an unknown molecular (noneolectrolyte) compound in 152.5 grams of water was found to have a freezing point of -1.8 degrees C. Calculate the molar mass of the unknown compound.
Monday, May 2, 2011 at 11:43pm by Ryan
Using the thermodynamic data provided below, calculate the standard change in entropy when one mole of sodium nitrate is dissolved in water? S° (J/K•mol) NaNO3(s) 116.3 Na+(aq) 60.25 NO3–(aq) 146.4 Using the value you calculated, how will the solubility of sodium nitrate ...
Tuesday, May 3, 2011 at 11:13pm by Nicole
Calculate the average mass, in grams, of an iron atom.
Thursday, May 5, 2011 at 5:37pm by Kamila
Calculate the mass percent (m/m) for the solute in 2 grams of KOH in 20.0 grams of H2O? How do I set this up?
Thursday, May 5, 2011 at 6:01pm by Curlyqty
You don't need a formula and you don't need to calculate the molarity. The problem tells you that you have 1 MOLE of each of the compounds ADDED to H2O to make 1 L of soln. What you need to know is the solubility of the compound as well as the formula of the compound. For ...
Monday, May 9, 2011 at 12:01am by DrBob222
How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion? Calculate the molarity of the solution. ______g ______M i honestly don't know where to start, but i know that M=mol/L will be involved somewhere... Please help...
Tuesday, May 10, 2011 at 9:50pm by Sam
Given: solubility (g/100g H2O) temp degrees celcius KBR 20 65 40 80 60 90 80 100 100 110 A solution containing 10.5g of KBr in 10g of H2O at 100 degrees celcius is cooled to 40 degrees celcius. A)calculate the g/100g H2O of KBr B)is the solution saturated at 100 degrees ...
Wednesday, May 11, 2011 at 7:57pm by Curlyqty
What do you mean by "nothing" is given in the question. There is plenty given in the question. The problem gives grams and molar mass and from that you calculate moles. You look at the balanced equation, multiply by 2 and that gives you moles NaOH. Then you solve M = moles/L (...
Wednesday, May 11, 2011 at 9:06pm by DrBob222
how do you calculate grams of KCL in 3 litres of a 5% solution? (scientific notation)
Thursday, May 12, 2011 at 4:15am by Denise
Silver crystallizes in a face centered cubic unit cell with an edge length of 0.40836 nm. Calculate the density of silver in grams per cubic centimeter i know the answer is 10.5 g/cm^3 but i keep getting lost in figure it out.
Saturday, May 14, 2011 at 11:24pm by ChemLover
The unit cell of palladiu m is a cube that is 389. 03 pm on a side. There are 4 Pd ato ms in the unit cell. Calculate the density of palladium in grams per cubic centimeter.
Tuesday, May 17, 2011 at 10:01pm by James
chemistry/ quantitative analysis
Look up the Ksp for CaSO4, set up an ICE chart, and solve for solubility (in moles/L) of CaSO4, then convert to grams and multiply by 6.
Sunday, May 22, 2011 at 9:52pm by DrBob222
illustrate and calculate the distance each of the following gases would meet on a 12 foot tube: gas A has a molecular weight of 288grams/mole: gas B has a molecular weight of 56 grams/mole
Sunday, December 12, 2010 at 11:03am by damini
(mass ice*heat fusion) + [mass water x specific heat water x (Tfinal-Tinitial)] = 0 Solve for mass ice then convert to number of cubes. Remember 1 mole water = 18 grams. The way I read the problem, they don't want any fractional ice cubes. If my interpretation is correct you ...
Tuesday, May 24, 2011 at 6:36pm by DrBob222
need to calculate percent yield of MgNH4PO4 . 6H2O obtained in my experiment using 10-52-10 plant food label as a guide to determine the theoretical yield of MgNH4PO4 . 6H2O. My calculations so far: air dry weight of MgNH4PO4 . 6H2O = 2.30 g Grams of phosphorusin MgNH4PO4 ...
Friday, May 27, 2011 at 1:36pm by Julia
Propane, C3H8, is a common fuel gas. Use the following to calculate the grams of propane you would need to provide 383 kJ of heat. C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(g) ΔH = −2043 kJ
Tuesday, June 7, 2011 at 8:24am by Lance
Look at PV = nRT If all of the gases have the same P, V, R, and T, then moles must bae equal. So how many moles oxygen do you have. At STP that is 0.96/32 = 0.03 So 0.03 x molar mass = grams of gas. Solve for molar mass of each gas. For Y, calculate the molar mass of each of ...
Thursday, June 9, 2011 at 8:22pm by DrBob222