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What is an example of how buffer solutions can cause a change in pH levels?
a student collects 31.8 mL of argon gas at a temperature of 21 Celsius and a pressure of 755 mmHg. What is the volume of argon at STP?
Question- The specific heat of aluminum is 0.900 J/g degree Celsius. Calculate the heat needed to raise the temperature of a 45.0 g block of aluminum from 20.5 degree Celsius to 297.4 degree Celsius
The molar solubility of AgBr in water is 7.31x10^-7 mol dm^-3 at 25C. What is the standard potential of the cell Ag(s)/AgBr(aq)/AgBr(s)/Ag(s) at that temperature
determine what is the density of the oxygen gas in the full bottle if a cylindrical gas lecture bottle has internal
Why does the processing of a crystalline material like nylon require more critical thermal control as opposed to an amorphous material like ABS
Problem- How would a buffer solution with a pH of 4.92 be prepared from acetic acid (ka=1.8 x 10^-5) and its conjugate base
Selective oxidation of hydrocarbons is a known method to produce alcohols. However, the alcohols react with the oxygen to produce aldehydes, and the latter react with oxygen to produce organic acids.
Iodine does not have a permanent dipole and is therefore a non-polar molecule. Why Iodine does not have a permanent dipole a) electronegativities of two iodine atoms are identical b) two iodine atoms will cause partial charge separation
Problem- A mixture of 0.500 mol NO2 and 0.500 mol CO is placed in a 1.00 L flask and given time to equilibrate. Analysis of the equilibrium mixture indicates that 0.123 mol of CO2 is present. Calculate Kc for the reaction.
Problem- A zinc bar weighing 3.0 kg is attached to a buried iron pipe to protect the pipe from corrosion. An average current of 0.020 A fows between the bar and the pipe. How many years will be required for the zinc bar to be entirely consumed
bone was dissolved in hcl giving 53.0 ml of solution that contains calcium chloride potassium oxalate was added to
What is the entropy change for freezing 4.25 g of C2H5OH at 158.7 K? H = -4600 J/mol. Answer in units of J/K.
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