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a) Draw a heating curve (qualitative) starting with ice at -20 degrees C going to steam at 200 degrees C. Indicate the solid, liquid, and gas states, and the melting and boiling points.
b) Given 1000.0 g of ice, calculate the energy required for each step in 2a.
c) From the information in 2b, draw the heating curve to scale.
d) Which step takes the most energy?
You are a laboratory assistant for your chemistry course. There are 250 students in the course, and each needs to use 25 mL of a 0.15 M solution of copper sulfate.
Explain the effect of pH on the aqueous solubility of dissolved organic matter (use the 13C NMR spectra on the International Humic Substances Society as your primary reference). Speculate on how DOM fractionation would change crossing a riverine (..
Which molecule has the largest mass?A sample of carbon consists of the isotopes carbon-12 and carbon-13.A sample of oxygen consists of the isotopes oxygen-16 and oxygen-17.Write the formula of all the different carbon dioxide molecules that can be..
Calculate the mass of a 1m3 parcel of dry air at STP. Calculate its mass at the same pressure but at 10 ?C and 20 ?C.
Write a balanced chemical reaction for the formation of a free fatty acid from a soap molecule under acidic conditions.
When 1.0 g of NaOH is dissolved in this same calorimeter the temperature raises by 1.6 C. Calculate the calorimeter constant and enthalpy of solution for one mole of NaOH.
Using the potential energy diagram below, answer the following questions concerning the given reaction: Draw the structure the is represented by the following 1, 2, 3and 4
A pressure-measuring device indicates that the blood pressure of a normal person oscillates between 120mm Hg (at the peak of the heartbeat) and 80mm Hg (between heartbeats).
Determine what the mothballs were made of. Pure ethyl alcohol has a boiling point of 78.41 degrees C and Kb = 1.22 deg C/m for this solvent.
concentrated sodium hydroxide is used as a laboratory reagent. the percent by mass of sodium hydroxide is 69.0. what is
A certain rifle bullet has a mass of 5.49 g. Calculate the de Broglie wavelength of the bullet traveling at 1697 miles per hour.
Compute the boiling point of this solution: 1.00 X 10^2g C10H8O6S2(1,5-naphthalenedisulfonic acid) in 1.00 X 10^2g H2O (nonionizing solute).
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