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Predict whether the entropy change is positive or negative for each of the following reactions. Give reasons for your predictions.2Na(s) + 2H2O(l) -> 2NaOH(aq) + H2(g)N2(g) -> 2N(g)
Water is composed of 11.2% hydrogen and 88.8% oxygen. What mass of water contains 16.0g of hydrogen?
A gas has a volume of 95 ml at a pressure of 930 torr. what volume will the gas occupy if the pressure is increased to 970 torr?
Perform whatever separations and tests you think necessary to determine which ions are in fact present
The intial temp of the water is 19.0C and the final temp of the system is 25.1C. The heat loss to calorimeter is negligible. What is the mass of the water?
Concentration of NADH was found by using beer's law using 6.22 mM cm-1 as extinction coefficient. Concentration of NADH = .0212 mM. Moles of NADH that are present in 1.02 mL sample was found by : .0212 mM x 1.02 mL = .021624 mM/mL
What is the gas pressure (in atm) inside a 1.89-L bulb that contains 1.56-g of Ne at a temperature of 21.1 C? Be sure to report the units as atm
Write the chain propagation steps for the formation of dichloromethane in the chlorination of methane
How are the princible of Le chatelier's used to increase the percentage yield in the production of ammonia in the haber process?
what is the corresponding pressure difference between points A and B, in mmHg. At which point (A or B) is the pressure higher, and why? The temperature is 60 °F throughout
Calculate the molar solubility of AgCl in a 1.00L solution containing 10.0g of dissolved CaCl2. Compare the molar solubility of Mg(OH)2 in water and in a solution buffered at a pH of 9.0
what is the concentration of sodium ions in the resulting solution?
What volume of a 35.0 mM solution of propionic acid is required to supply
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