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1. The normal melting and boiling points of a substance are -163°C and -128°C respectively. Its triple point is at 125 K and 0.37 atm. Its critical point is at 150 K and 1.45 atm.
a. Sketch the phase diagram for the substance, showing the four points given and indicating the area in which each phase is stable (i.e. solid, liquid, gas regions).
b. As it is heated, will the substance sublime or melt under a pressure of 0.20 atm?
2CaH18(g) + 9O2(g) > 2Ca2(g) + 18H2O(g) Enter the coefficients for each compound in order, separated by commas. For example, 1,2,3,4 would indicate one mole of C8H18, two moles of O2, three moles of CO2, and four moles of H2O.
A solution of ethanol (C2H5OH) in water is prepared by dissolving 58.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 235.0 mL of solution. What is the molarity of the ethanol in this solution?
consider the dissolution of mns in water ksp 3.0 times 10-14.mnss h2ol picture mn2aq hs-aq oh-aqhow is the
What is the redox number for nitrogen in a molecule of nitrogen dioxide
A large gas flask is found to weigh 143.567 g. it is then filled with gas to a pressure of 735 torr at 31 C and found to weigh 1067.9 g.
What was the percent copper in the alloy? Besides copper, what cations are present in solution after you react the alloy nitric acid?
Question- Determine the mass of a nonvolatile, nonionizing compound that must be added to 3.17 kg of water to lower the freezing point to 98.70°C. The molar mass of the compound is 50.0 g/mol and the Kf for water is 1.86°C kg/mol.
a rectangular block has dimensions 2.9 cm . 3.5 cm . 10.0 cm. the mass of the block is 615.0 g. what are the volume and
Calculate the standard change in Gibbs free energy, ?G°rxn, for the following reaction at 25.0 °C. Standard Gibbs free energy of formation values can be found.
What is the coordination number of the central metal ion in K3[Co(H20)4Cl2] one, two, four or six
A certain copper ore contains 2.34% of Cu2S by mass, and the remainder of the ore contains no copper. In a particular year, a single open-air smelt furnace heated 26000 tons of this ore.
Draw a Lewis structure for CN- where the bonding occurs along the x-axis. Be sure to include all lone pairs and formal charges if appropriate.
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