What is the boiling point (in °C) of a solution of [a] g of…
What is the boiling point (in °C) of a solution of [a] g of I2 in [b] g of toluene, assuming the I2 is nonvolatile? (For toluene, Tb = 110.63°C and Kb = 3.40°C·kg/mol.) round your answer to two decimal places, do not include units.
Read DetailsAn infant was found to have brain injury and subsequently pa…
An infant was found to have brain injury and subsequently passes away. It was noted during a police investigation that the babysitter had shaken the baby violently during an unrelenting crying episode. The most likely form of brain damage was:
Read DetailsA) The label on a certain small appliance states that the ap…
A) The label on a certain small appliance states that the appliance carries a current of 5.00 A when connected to a source of 120 V. What is the resistance of the appliance? (5 points) B) A tungsten wire has a cold resistance of 0.350 Ω at 20o C. If the temperature is increased from room temperature ( 20oC ) to 2000o C , what is the resistance of the wire? Temperature coefficient of resistivity for Tungsten is 4.5×10−3/oC (5 points) C) What is the resistance of a 15.0 m long piece of 12-guage copper wire having a 3.50 mm diameter? Resistivity of copper is 1.72 x 10-8 Ohm meter. (5 points) D) How much power is dissipated in a short circuit of 240 V AC through a resistance of 0.750 Ohms? (5 points) E) An electric water heater consumes 6.00 kW for 3.00 hours per day. What is the cost of running it for 30 days if electricity costs 12.0 cents/kW.h ? (5 points)
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