only 0.203 mL of C6H6 will disolve in 100.00mL of H2O. Assuming that the volumes are...
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only 0.203 mL of C6H6 will disolve in 100.00mL of H2O. Assuming
that the volumes are...
If the solubility of sodium chloride (NaCl) is 30.6 g/100 mL of H2O at a given...
If the solubility of sodium chloride (NaCl) is 30.6 g/100 mL of H2O at a given temperature, how many grams of NaCl can be dissolved in 250.0 mL of H2O? If the solubility of glucose (C6H12O6) is 120.3 g/100 mL of H2O at a given temperature, how many grams of C6H12O6 can be dissolved in 75.0 mL of H2O? Only 0.203 mL of C6H6 will dissolve in 100.000 mL of H2O. Assuming that the volumes are additive, find the volume/volume...
Mix 0.05M KH2PO4 and 0.05M K2HPO4 in the following volumes (ml) in 100mL beakers or cups:...
Mix 0.05M KH2PO4 and 0.05M K2HPO4 in the following volumes (ml) in 100mL beakers or cups: **this only like 5 cups to save time** Cup K2HPO4 (ml) KH2PO4(ml) 1 0 50 2 1 49 3 5 45 4 10 40 5 20 30 For each cup calculate these four values: Concentration of K2HPO4, Concentration of KH2PO4, % of total phosphate in the form of K2HPO4 and log[K2HPO4/KH2PO4] Please show your work for each calculation!! you can just solve for one...
A 37.0 mL aliquot of a 0.600M stock solution must be diluted to 0.100 M. Assuming...
A 37.0 mL aliquot of a 0.600M stock solution must be diluted to 0.100 M. Assuming the volumes are additive, how much water should be added? volume of water 222 mL How many grams of chlorine gas are needed to make 5.30 x 10 g of a solution that is 1.20 ppm chlorine by mass? g Cl mass Classify each compound as a strong electrolyte, weak electrolyte, or nonelectrolyte. Strong electrolyte Weak electrolyte Nonelectrolyte H,SO (NH,),S H,CO, Classify the mixtures...
1. A 19.6 gram sample of KCl is used to make a 275. mL KCl solution....
1. A 19.6 gram sample of KCl is used to make a 275. mL KCl solution. What is the molarity of the KCl solution? 2. A chemist has a bottle containing 0.25 M CuCl2. How many milliliters of this solution should the chemist use to add 12.0 grams of CuCl2 to her reaction? 3. In a saturated solution of the ionic compound sodium sulfate, Na3PO4 all of the water molecules are involved in the hydration process. some solid Na3PO4 is...
3. When 10 mL of 2.0 M HCl is combined with 30 mL of 0.667 M...
3. When 10 mL of 2.0 M HCl is combined with 30 mL of 0.667 M NAOH a temperature change of 6.9 °C was observed. How much heat was given off per mole of water produced? ASsume the volumes are additive and that this NaCl solution has a density of 1.02 g/mL and a specific heat of 4.00 J/g-C. 2. How much heat is needed to change 32 g of 4.A 0.865 g sample of candy is burned in a...
How many moles of NaOH are present in 14.5 mL of 0.220 M NaOH? moles: How...
How many moles of NaOH are present in 14.5 mL of 0.220 M NaOH? moles: How many grams of solute are present in 355 mL of 0.670 M KBr? mass of solute: A 37.0 mL aliquot of a 0.600 M stock solution must be diluted to 0.100 M. Assuming the volumes are additive, how much water should be added? volume of water: How many grams of chlorine gas are needed to make 5.30 x 10g of a solution that is...
A solution of 5 x 10-3 M MnO4- is dissolved in 25.00 mL of H2O. What...
A solution of 5 x 10-3 M MnO4- is dissolved in 25.00 mL of H2O. What volume of H2O must be added to the solution to reduce the concentration of [MnO4- ] to 7.5 x 10-4 M? If possible, please show work so I can learn and understand how you approached the problem and solved it. Thanks!
please heeelp me compute the concentration mass solute/100 g H2O and mole fraction please. i don't know how to d...
please heeelp me compute the concentration mass solute/100 g H2O
and mole fraction please. i don't know how to do it. thank
you
A. Determination of Solubility Above Ambient Temperature Temperature 24°C Mass of apparatus 117. 33 g Mass of apparatus with oxalic acid dehydrate 123.33 Mass of oxalic acid dihydrate used 6 g Mole fraction Crystal formation Temperature (°C) Concentration mass solute/100 H2O Total Volume (mL) 10 ml S m mu 480 45°C 417°C 10 ml 24° C B....
i cant seem to get #4/5 7.2 g Pb 7.2 mg Pb 106 g sln L...
i cant seem to get #4/5
7.2 g Pb 7.2 mg Pb 106 g sln L sln oblems 3-6: 3) A solution should be prepared as 3.56 M calcium chloride, CaCl2. Calculate mass (b) of the VOI solute that is needed in order to prepare 3500 mL of the solution. 3.56M CaCl2 mois. -= 12.46mols 3.5L - mol 12.46 molsy 110. agu Imol = 1382.86 11400g (4) A solution is prepared by dissolving 65 g of ethyl alcohol (density=0.78 g/mL)...
please show work so: 1 ml stock 10 ml final -0.5 mL of stock -5 ml...
please show work
so: 1 ml stock 10 ml final -0.5 mL of stock -5 ml final volume While I have used 1:10 as a standard the same rules apply for all dilution factors. Try these problems: x 0.5 X0.5 1. You need to make a 1:25 dilution factor. If you final volume is 25 mL this means that you need_ _mL of stock and mL of solvent to make your final volume of 25 mL. 2. If you needed...
A 37.0 mL aliquot of a 0.600M stock solution must be diluted to 0.100 M. Assuming the volumes are additive, how much water should be added? volume of water 222 mL How many grams of chlorine gas are needed to make 5.30 x 10 g of a solution that is 1.20 ppm chlorine by mass? g Cl mass Classify each compound as a strong electrolyte, weak electrolyte, or nonelectrolyte. Strong electrolyte Weak electrolyte Nonelectrolyte H,SO (NH,),S H,CO, Classify the mixtures...
3. When 10 mL of 2.0 M HCl is combined with 30 mL of 0.667 M NAOH a temperature change of 6.9 °C was observed. How much heat was given off per mole of water produced? ASsume the volumes are additive and that this NaCl solution has a density of 1.02 g/mL and a specific heat of 4.00 J/g-C. 2. How much heat is needed to change 32 g of 4.A 0.865 g sample of candy is burned in a...
How many moles of NaOH are present in 14.5 mL of 0.220 M NaOH? moles: How many grams of solute are present in 355 mL of 0.670 M KBr? mass of solute: A 37.0 mL aliquot of a 0.600 M stock solution must be diluted to 0.100 M. Assuming the volumes are additive, how much water should be added? volume of water: How many grams of chlorine gas are needed to make 5.30 x 10g of a solution that is...
please heeelp me compute the concentration mass solute/100 g H2O
and mole fraction please. i don't know how to do it. thank
you
A. Determination of Solubility Above Ambient Temperature Temperature 24°C Mass of apparatus 117. 33 g Mass of apparatus with oxalic acid dehydrate 123.33 Mass of oxalic acid dihydrate used 6 g Mole fraction Crystal formation Temperature (°C) Concentration mass solute/100 H2O Total Volume (mL) 10 ml S m mu 480 45°C 417°C 10 ml 24° C B....
i cant seem to get #4/5
7.2 g Pb 7.2 mg Pb 106 g sln L sln oblems 3-6: 3) A solution should be prepared as 3.56 M calcium chloride, CaCl2. Calculate mass (b) of the VOI solute that is needed in order to prepare 3500 mL of the solution. 3.56M CaCl2 mois. -= 12.46mols 3.5L - mol 12.46 molsy 110. agu Imol = 1382.86 11400g (4) A solution is prepared by dissolving 65 g of ethyl alcohol (density=0.78 g/mL)...
please show work
so: 1 ml stock 10 ml final -0.5 mL of stock -5 ml final volume While I have used 1:10 as a standard the same rules apply for all dilution factors. Try these problems: x 0.5 X0.5 1. You need to make a 1:25 dilution factor. If you final volume is 25 mL this means that you need_ _mL of stock and mL of solvent to make your final volume of 25 mL. 2. If you needed...
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