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In an experiment 1.550g of mercury oxide decomposed to give oxygen gas and 1.435g of liquid mercury. What is the empirical formula of mercury oxide?
carbon monoxide (CO) in an reaction to produce 2 moles of iron and three moles of carbon dioxide, what is the mole ratio between these reactants?
Consider an electron moving from an n = 2 orbital to an n = 1 orbital. For this to occur, will the atom need to absorb energy or dissipate energy by releasing a photon of electromagnetic radiation. Is the n = 2 orbital more or less stable than the..
The measured potential was 0.0330 V. What is the concentration of X when the potential is 0.0480 V? Assume that the electrode follows the Nernst equation, the temperature is at 25°C, and that the activity coefficient of X is 1.
how much energy would be required to raise the temperature of 75.0 g of water from 25 c to 75 c
The dried precipitate weighs 10.3g. Calculate the amunt of MgCl2 in the original sample (in weight percent).
A rigid tank contains 20 lbm of air at 20 psia and 70F. More air is added until the pressure and temperature rise to 35 psia and 90F
the standard free energy change delta G*T at 500K is equal to 9.8*10^4 J/mol. Calculte the equilibrium constant at 500 K.
What is the pH of 10 drops of triethylamine in a dropperful of demineralized water? How does the reaction between triethylamine and water explain the measurement of the pH?
Calculate the standard reduction potential for the reaction for the reaction Cu(III) to Cu(II).
Determine the number of bonding electrons and the number non-bonding electrons
calculate the energy needed to raise the temperature of 180.0g of water from 10.0 C to 40.0 C. The molar heat capacity for water is 75.3 J/k*mol
Orange juice is an aqueous solution that derives much of it's acidity from citric acid. There are variations in the acidity of each brand depending on many factors
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