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3230 J of heat are added to a 29.7 g sample of iron at 29 degree C. What is the final temperature of the iron? The specific heat of iron is 0.449 J/g. K
What mass of CaCl2, when dissolved in 100.00g of water, gives an expected freezing point of -5.0 degrees celcius; CaCl2 is ionic?
Draw a phase diagram labeling all the above points. Also label the melting point curve, the boiling point curve, and the solid, liquid, and gas regions.
Calculate the specific heat capacity of a sample liquid if this 100 g sample of an unknown liquid absorbs 2000 J of heat energy, raising the liquid's temperature from 50 degree Celsius to 70 degree Celsius?
What is the pH of an 85 mL solution containing .215 M NaHCO3 and .203 M Na2CO3?
the mass spectrum determined the molecular weight of mehtyl salicylate to be 125.15 g/mol. What is the molecular formula of methyl salicylate?
There are about 1,200,000 autos .each auto emits 3.1g NO2 and 1.6g CH4 per vehicle mile. Each auto travels 30 miles round trip per day. How much NO2 and CH4 in g/day is emmited in the air daily?
Which ions were present in the original solution? What are the net ionic equations for each reaction that occured?
A 2.00-g sample of white solid was vaporized in a 345-mL vessel. If the vapor has a pressure of 985 mmHg at 158°C, what is the molecular mass of the solid?
What is the molarity of a solution prepared by dissolving 13.1 g of glucose (of MW 180 amu) in 217 mL of solution?
What is the recommended daily allowance (RDA) of calcium, in mg, assuming a 2000 calorie diet for a 25 year old adult? A student carries out part 1 of this experiment and finds the equation for his/her calibration curve to be
The gas is collected over water . If 156 mL of gas is collected at 19oC and 769 mmHg total pressure, what is the mass of hydrogen collected?
What are the equations for Tin (IV) Chloride reacting with each of these? (ethanol, toluene, NaOH, dilute, HCL and conc HCL)
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