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1.2 kg of liquid water initially at 15 degrees clecius is to be heated to 95 degrees celcius in a teapot equipped with a 1200 W electric heating element inside. The specific heat of water can be taken to be 4.18 kJ/kg. Degrees Celcius, and the heat loss from the water during heating can be neglected. What is the time it takes to heat the water to the desired temperature?
Suppose that the gas-phase reaction A B and B A are both elementary processes with rate constants of 5.40e+03 s-1 and 4.35e+04 s-1, respectively.
A solution of HCl in water conducts an electric current , but a solution of HCl in hexane does not. explain this behavior in terms of ionization and chemical bonding
You have a 10.40-g mixture of table sugar (C 12 H 22 O 11) and table salt (NaCl). When this mixture is dissolved in 150. g of water, the freezing point is found to be-2.24C. Calculate the percent by mass of sugar in the original mixture.
you add 1.00 g of a solid weak acid to 100 ml of water then titrate with 0.100 m naoh solution. the ph at the half
An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide. If the mass is 21.3g, what is this substance's density?
When 35.0 g of an unknown nonelectrolyte is dissolved in 220.0 g of benzene, the solution boils at 83.2°C. Calculate the molecular weight of the unknown nonelectrolyte. The Kb for benzene = 2.53°C/m. The boiling point of pure benzene is 80.1°C.
what is the pressure in millimeters of mercury of 0.0110 of helium gas with a volume of 214 at a temperature of
Like sulfuric Acid, a certain diprotic acid, H2A, is a strong acid in its first deprotonation and a weak acid in its second deprotonation. A solution that is 0.020 M H2A (aq) has a pH of 1.66. What is the value of Ka2 for this acid
Identify the element oxidized and reduced in the following redox rxn. Also indicated the number of electrons lost/gained by each atom.
in hundreds of thousands of homes across the country family swimming pools and spas require sanitation and maintenance
This indicates that the solution is now more acidic, and the reaction shifts to the right, working to lower the concentration of hydrogen ions, and return to equilibrium
Calculate the percent yield of this reaction? 4. Calculate the Atomic economy and Experiment Atomic economy? 5. Calculate E-product
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