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How much energy in kJ is needed to heat 5.00g of ice from -10.0oC to 30.0oC? The heat of fusion of water is 6.01 kJ/mol and the molar heat capacity is 36.6 J/(oK.mol) for ice and 75.3 J/(oK.mol) for liquid water.
A flask contains 0.180 of liquid bromine br2, . Determine the number of bromine molecules present in the flask.
if the initial concentration of the reactant in a first-order reaction A-> products is 0.64 mol/L and the half-life is 30.0 s. what is the concentration after 60 s.
Silver has two naturally-occurring isotopes with masses of 106.905092 amu and 108.904756 amu. What are the percent abundances of each isotope, respectively?
A voltaic cell is based on the reaction Sn(s)+ I2 (s) --> Sn^2+ (aq)+ 2I^- (aq). Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 70.0 g of Sn is consumed?
You have to prepare a pH 5.06 buffer, and you have the following 0.10M solutions available: HCOOH, HCOONa, CH3COOH, CH3COONa, HCN, and NaCN. Which solutions would you use
What mass of propane gas, C3H8, will occupy 860. mL at 880. mm Hg and 81.0°C?
Calculate delta S for the heating of 1 mole of SO2(g) from 75°C to 1350°C at a constant pressure of 1 bar.
Assuming that the addition of the acid does not change the volume of the solution what is the pH of the acid/water mixture in the flask?
A patient needs to take 375 of ibuprofen twice daily. The pills in the bottle are each 250. . How many pills does the patient need to take each time she wants the 375 dosage? Assume that these pills are scored and can be cut in half if necessary.
Calculate the kinetic energy of an electron ejected by a photon with wavelength 1.91 x10^2 nm from a metal with a binding energy of
isopentyl alcohol, how many grams of isopentyl acetate could you theoretically produce assuming only a 65% attainable yield?
Acetic anhydride is formed from acetic acid in a condensation reaction that involves the removal of a molecule of water from between two acetic acid molecules. Write the chemical equation for this process.
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