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A 62.78 gram sample of iron (with a heat capacity of 0.450 J/g ºC) is heated to 100.0 ºC. It is then transferred to a coffee cup calorimeter containing 40.16 g of water (specific heat of 4.184 J/ g ºC) initially at 20.63 ºC. If the final temperature of the system is 23.59, how much heat was absorbed by the calorimeter? Record your answer as a whole number (assume the sign is positive.
a bottle of phosphoric acid is labeled 85 h3po4 by mass density 1.689 gcm3. calculate the molality h3po4 in the
The calcium compound that precipitated was measured to be 18.9 milligrams. Determine the grams of the element calcium in one Liter of water.
A student found that her mixture was 15% NH4Cl and 75% SiO2 .Assuming her calculation are correct, what did she most likely do incorrect in her experiment?
A 1.724 M solution of a compound in water has a density of 1.281 g/mL at 20°C. The compound has a molar mass of 62.30 g/mol.
The deltaH for the dissolution of solid sodium hydroxide in water is -44.4 kJ/mol. What is the final temperature of a solution when 13.9 g of NaOH dissolves in 250.0 g of water in a coffee-cup calorimeter. The initial temperature is 23.0 °C. Assu..
The ester responsible for the aroma of fresh raspberries is2-methylpropyl formate proposes a synthesis for this ester.
Determine the mass of cupric sulfate penthahydrate needed to make 250mL of an aqueous 0.5 molar solution
A voltaic cell is constructed by immersing a strip of silver metal in a 1.0M AgNO3 solution and a strip of Cadmium metal in a 1.0M Cd(NO)3 solutio. the circuit is completed by a wire and a salt bridge in the usual way.
To ensure that do not provide customers with substandard product, the local steel mill has instigated a quality control program using flame AAS. two of the trace elements they wish to monitor, Al and Ti, form stable oxides. Is this a potential pro..
Describe the phenomenons of osmosis, freezing point lowering and boiling point increase and what is the osmotic pressure of the above salt/sugar solution in comparison to pure water?
How many grams of IO2F are needed to react completely with 150.0 g of BrF3? 3IO2F(s) + 4BrF3(l) → 3IF5(l) + 2Br2(l) + 3O2(g)
Its thermal decomposition can be represented by: 2Al2O3 (s) = 4Al (s) + 3O2 (g) deltaHrxn = 1676 kJ. If aluminum is produced this way, how many grams of aluminum can be formed when 1.000 x 10^6 J of heat is transferred
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