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A student measures 5.45 cm3 of chloroform using a glass syringe. Given that the density of chloroform is 1.48 g/mL, and the molar mass is 119.38 g/mol, how many moles of chloroform did the student measure?
How many moles of Na and Cl2 are needed to make 7.3 moles of NaCl? Use the balanced equation 2Na + Cl2 --> 2NaCl
The mass of a cube of iron is 392 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
A 113L sample of helium at 27 degrees Celsius is cooled at a constant pressure to -78 degrees Celsius. calculate the new volume of the helium.
what will be the temperature of the system when equilibrium is established? Â (sp Heat of H2O(s) = 2.09j/g . c (sp heat of H2O (l) = 4.18 J/g.c) Heat of Fus. of H2O(s)=333j/g
The activation energy for the following reaction is 60. kJ/mol. Sn2+ + 2Co3+ → Sn4+ + 2Co2+
Magnesium reacts with iron(III) chloride to form magnesium chloride and iron. 3Mg(s) + 2FeCl3(s) => 3MgCl2(s) + 2Fe(s)
A muon is an elementary particle with a negative charge equal to the charge of an electron and a mass approximately 200 times that of the mass of an electron.
Use the Van Der Waals equation to calculate the pressures of the three real gases. Compare the plots and explain the origins of any differences you find.
A cylinder contains 28,500 ml of oxygen gas at a pressure of 1368 mm Hg and a temperature of 25 C.
The second container is kept at 149.2 K. What is the volume (in liters) of nitrogen gas in container 2? Containers are kept at a constant pressure.
0.10 gram sample of a gas occupies 47 ml of vol at 25 deg C and 755 mm Hg. What's the FW of the compound?
Nylon undergoes depolymerization when heated in aqueous acid. Propose a reaction mechanism that accounts for this fact, using curved arrows to symbolize the flow of electrons.
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