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How many grams of Ag can be formed from 9.50 grams of Ag2O in the equation: 2Ag2O (s) ? 4Ag (s) + O2 (g)?
At 570. mm Hg and 25C, a gas sample has a volume of 2270 mL. What is the final pressure (in mm Hg) at a volume of 1250 mL and a temp of 175C?
A 25.264 g cube of aluminum is cooled to a temperature of -15.26*C. If it's placed in 250.00g of water at 35.00*C, what would the final temperature of the aluminum and water be when the system comes
Calculate the amount of heat energy (q) gained or lost when 180g of water is cooled from 65.0*C to 28.5*C. What is the sign of q for this calculation
What is the formula for corn oil, a triglyceride containing palmitic, oleic and linoleic acids
Describe an example of the how the structure of DNA or the transfer of genetic information impacted someone's life.
Carbohydrates, lipids, and proteins! Take a look around your home. Describe an example of a carbohydrate, lipid, and/or protein found in your home.
how many grams of oxygen are produced. what are the limiting and excess reactants and how much ER remains
consider a reaction in which ferric oxide is converted to iron and gaseous oxygen. If this reaction is only 83% efficient and the ferric oxide is only 87.5% pure, what mass of ferric oxide is requir
Beakers 1 through 4 contain 2.3, 1.91, 5.985, and 0.52 g of dry potassium nitrate respectively. How many moles of potassium nitrate were recovered after the water evaporated
Using noble gas (n-1) dx representations write the outer electron configuration for the following ions
The resulting solution required 13.73 mL of 0.176 mol L 1 NaOH(aq) to neutralize the excess, unreacted HCl. What was the percentage by mass of Mg(OH)2 in the original sample
Oxalic acid is a diprotic acid that occurs naturally in some plants. Calculate the pH and the concentrations of all species present in a 0.72-M solution
Calculate the freezing point of a 0.08500 m aqueous solution of NaNO3. The molal freezing point depression constant of water 1.86 degrees C/m.
Oxalic acid is a diprotic acid that occurs naturally in some plants. Calculate the pH and the concentrations of all species present in a 0.36-M solution.
The concentration of KBr in a solution prepared by dissolving 2.13 g of KBr in 897 g of water is moral
The concentration of urea (MW=60.0g/mol) in a solution prepared by dissolving 16 g of urea in 39 g of H2O
A solution is prepared by dissolving 23.7 g of CaCl2 in 375 g of water. The density of the resulting solution is 1.05 g/mL. The concentration of CaCl2 in this solution is molar
calculate the solubilities (g A/100 gS) at 10.2 degrees C and 0 degrees C and the mass of solid crystals in the breaker at 0 degrees C. and if you have the time, I'd really appreciate help with:
When solutions of strong electrolytes are formed in water, the ions are surrounded by water molecules. These interactions may be described as
A solution is prepared by dissolving calcium chloride in water and diluting to 500.0 mL. If this solution contains 44 ppm chloride ions, the concentration of calcium ions is how many ppm
Why is the reaction of the dissolving ammonium nitrate (NH4NO3) in water spontaneous even though the dissolution is endothermic
The CNOG ion is very unstable and is the reason why the mercuric compound is explosive. On the other hand, mercury cyanate, Hg(NCO)2, is not explosive. The cyanate ion (NCOG) is a stable ion. Use re
On the basis of your data what conclusion may be made regarding the separating ablility of simple and fractional distillation? comment on how well your results compare with what might be expected us
if the thermometer is position too high in the distillation adapter how would this affect your boiling point