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Calculate the average H S bond enthalpy in H2S(g) given the standard enthalpies of formation for H2S(g), H(g), and S(g) as -20.1, 218, and 223 kJ · mol-1 , respectively.
For a large batch of nails, a manufacturer needs to plate a total zinc mass of 1.40kg on the surface to get adequate coverage. How many moles of zinc are in 1.40kg of zinc?
What is the mechanism for turning 1-bromotbutane when it reacts with KI and DMF into n-butyl acetate?
What major differences would exist in protein structures between earth and this hypothetical planet.
Why are the noble gases so unreactive
The most accurate values of absorbance are obtained in the range of A = 0.3-2. Which of the following reasons account for lowered accuracy at higher or lower absorbancy values? (Check all that apply).
Calculate the final temperature of the gas, in Kelvins, if the pressure is increased to 124 kPa and the volume decreases to 5.00 L.
Balance the following electrochemical equation for an acidic environment. NO3- + Cu à NO + Cu2+. Balance the following electrochemical equation for a basic environment. Cl- + Ag+ à Ag + ClO2-
Calculate the mass defect in Fe-56 if the mass of an Fe-56 nucleus is 55.921 amu. The mass of a proton is 1.00728 amu and the mass of a neutron is 1.008665 amu.
If 2.00 g of isopentyl alcohol is reacted with 10.0 mL of acetic acid and 2 drops of sulfuric acid, what is the theoretical yield? Report your value to TWO decimal places (x.xx g).
Safranin is a red stain used in biology and has this structure. Use the structure of the molecule to explain why safranin is coloured.
A sample of nitrogen gas in a 1.60-L container exerts a pressure of 1.52 atm at 26 °C What is the pressure if the volume of the container
Compute G at 298 K if the reaction mixture consists of 6.9atm of H2, 5.0atm of F2, and 0.47atm of HF.
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