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Precisely 14.3 mL of water at 30.0 degrees Celsius are additional to a hot iron skillet. All of the water is rehabilitated into steam at 100 degrees Celsius. The mass of the pan is 1.25 kg also the molar heat capacity of iron is 25.19 J/(mol*degree Celsius). What is the temperature change of the skillet in degrees Celsius?
If it takes 20nL of an1.2M solution of iodine to titrate 15mL of an ascorbic acid solution calculate the molarity of the ascorbic acid solution
Exhaling during breathing is doing work since air is moved against atmospheric pressure. Calculate the work done in J when 0.500L of air is exhaled into an empty balloon at an atmospheric pressure of 1.00 atm.
Predict the reactivity of benzaldehyde compared to benzene in a Friedel-Crafts reaction. Benzaldehyde is _______________ reactive than benzene in Friedel-Crafts reactions.
A 2.45-g sample of strontium completely reacts with oxygen to form 2.89 g of strontium oxide. Use this data to calculate the mass percent composition of strontium in strontium oxide.
The molar enthalpy of fusion of ice at 0 0C is 6.02 kJ/mol; the molar heat capacity of supercooled water is 75.3 J/molK. (a) One mole of supercooled water at -10 0C is induced to crystallize in a heat-insulated vessel.
an ingot of aluminum metal with a mass of 87.50 g is to be hammered into a thin sheet to be used as aluminum foil. if
Why must the spot applied to a TLC plate be above the level of the developing solvent
What is the ratio of C-14 in a wooden object made in 100 BC to the one made of the same kind of wood in 700 BC? Half life of carbon-14 is 5730 years.
The overall formation constant for Cu(NH3)42+ is 1.1x1013 at 25oC. What is [Cu2+], in moles per litre, at equilibrium when 8.3 g Cu(NO3)2 is dissolved in 0.500 L of 1.00 mol/L NH3(aq)? Assume that there is no volume change when the Cu(NO3)2 is add..
Which set of quantum numbers describes the highest energy electron found in the ground state of a Scandium atom?
Describe how you would make 2.35 g of a mixture of sand,clay and ash in the following percentages, respectively : 24.64%, 4.23%, and 71.13%
Products of combustion are then exhausted to the atmosphere. Calculate partial pressures of gases in the exhaust of the tool if 0.1 g of butanol is ignited in a chamber with the initial volume of 1.4 l at 1 atm. Exhaust temperature is 55 oC. Air c..
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