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Water is a excellent solvent for many substances. Explain what is the molecular basis for this property and why is it significant?
The heaviest known isotope of hydrogen is called tritium, 3/1 H. It decays by beta emission, and half-life of 12.3 years. What fraction of a tritium sample will remain after 5.20 years
The heat of combustion of CH4 is 8904 kJ/mol also the heat capacity of H2O is 75.2 J/mol×K. Determine the volume of methane measured at 298 K and 0.790atm needed to convert 1.33L of water at 298 K to water vapor at 373 K.
Ethanol is a common additive to gasoline. Using the provided equation, determine how many grams of ethanol are needed to provide 293 kJ of heat.
you take an unknown solution and measure 1ML of it into a flask. You dilute it with 25mL of water and 10mL of H2SO4. You titrate the solution with 19.80 mL of KMnO4. The (MnO4)- is reduced to (Mn) 2+ by the unknown solution. What is the normality ..
Explain what is the empirical formula of the compound if you find that 0.105 g of the compound gives 0.257 g of CO2 and 0.0350 g of H2O when burned completely.
Identify the compound: molecular mass 113; gives a positive hydroxamate test; IR: 2237, 1733, 1200 cm-1; 1H NMR: ? 1.33 (3H, t, J = 7 Hz), ? 3.45 (2H, s), ? 4.27 (2H, q, J = 7 Hz). Please draw the structure.
Once the system has reached equilibrium, 5.00g of NO2 is injected into the vessel, and the system is allowed to equilibrate once again. Calculate the mass of N2O4 in the final equilibrium mixture.
If we have benzene, acetyl chloride, AlCl3 and HCl in a solution of NaoH and CH2Cl2 which of these will be in the NaOH layer and Which of them will be in the CH2Cl2 layer
If the reaction is carried out in a 2.0 L container and 0.010 mol of PH3 is consumed each second, what are the rates of production of P4 and H2?
Compute the change in temperature for 4.50 grams of Calcium chloride CaCl 2 dissolved in 90.0 mL of water H 2 O. (Assume that the calorimeter absorbs no heat )
The excess HCl in the solution required 94.9 mL of 0.128 M NaOH for complete neutralization in a titration. What was the molecular formula of the white substance
Agas company in Massachusetts charges $1.30 for 15.0 cubic ft of natural gas. (a) Convert this rate to dollarsper liter of gas. (b) It takes 0.304 cubic ft of gas to boil aliter of water, starting at room temperature (25 degrees), how much would i..
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