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Explain an ionic equation has 2H (aq) on the left side and H2 (g) on the right. Are these species spectators? Define why?
The vapor pressure of ethanol is 100 mmHg at 34.9°C. What is its vapor pressure at 65.5C? (?Hvap for ethanol is 39.3 kJ/mol.)
A person who has taken antibiotics for several weeks because of a severe bacterial infection may develop a deficiency of which vitamin
A 0.831-g sample of SO3 is placed in a 1.00-L container and heated to 1100 K. The SO3 decomposes to SO2 and O2: 2SO3(g) 2SO2(g) + O2(g). At equilibrium the total pressure in the container is 1.300 atm. Calculate Kp for the above reaction at 1100..
A system receives 729 J of heat and delivers 4,104 J of work to its surroundings. What is the change in internal energy of the system (in J)
a vessel of 1.000 l is filled with 1.000 mole of h2 2.000 moles of n2 and 2.000 moles of ammonia. nbspconcentration of
calculate the change in pH that occurs when 1.00 mmol of a strong acid is added to 100 mL of 0.0500 M HCl.
what is the freezing point of a solution made by dissolving 352 g of ethylene glycol c2h6o2 in 648 g of water? the
A stellar object is emitting radiation at 3.75 mm. If the detector is capturing 3.3*10^8 protons per second at this wavelength, what is the total energy of the photons detected in one hour
How long does it take (in minutes) for light to reach Mars from the Sun, a distance of 2.402 × 108 km
What is the hydronium ion concentration of a 0.150 M hypochlorous acid solution with Ka=3.5x10^-8? The equation for the dissociation of hypochlorous acid is
a mixture of hydrogen gas of 8.0 mol and oxygen gas of 4.0 mol is placed in a sealed evacuated container made of a
Suppose that 24 g of each of the following substances is initially at 25.0^circ C. What is the final temperature of each substance upon absorbing 2.45 kJ of heat?
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