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Suppose that the silver-silver chloride electrode in the figure is replaced by a saturated calomel electrode. Calculate the cell voltage if [Fe2+]/[Fe3+] = 5.0 10-3. V
A solution is prepared by dissolving 159 g sucrose (C12H22O11) in enough water to produce 1.40 L solution. What is the molarity of this solution?
It is found that 4.68e-06 g of Nd2(CO3)3 dissolves per 100 mL of aqueous solution at 25 oC. Calculate the solubility-product constant for Nd2(CO3)3
1) How many moles of oxygen atoms are present in a sample that contains 3.86 moles of dioxygen difluoride O2F2? The answer I got from this was: 7.72 moles of O2 atoms?
What is the change in pH after addition of 10.0 mL of 1.0 sodium hydroxide to 90.0 mL of a 1.0 M NH3/1.0 M NH4+ buffer? [ Kb for ammonia is 1.8 x 10^-5]?
When 0.100 g of graphite is burned completely in a bomb calorimeter (heat capacity = 3.344 kJ/C), containing 3000 g of water, a temperature rise of 0.21C is observed. What is deltaE for the combustion of graphite. The specific heat of liquid wa..
The vapor pressure of pure CCl4 at that temperature is 143 torr and the vapor pressure of the pure unknown is 85 torr. What is the molar mass of the unknown?
Liquid nitrogen trichloride is heated in a 2.88-L closed reaction vessel until it decomposed completely to gaseous elements. The resulting mixture exerts a pressure of 766 mmHg at 75°C.
Sodium bicarbonate undergoes thermal decomposition according to 2 NaHCO3(s) Na2CO3(s) + CO2(g) + H2O(g) What happens when 0.20 atm of argon gas is added 1. [CO2] increases 2. [CO2] decreases 3. [CO2] stays the same
A small piece of zinc reacts with dilute HCl to form H2, which is collected over water at 16°C into a large flask. The total pressure is adjusted to barometric pressure (752 torr), and the volume is 1544 mL.
what is the theoretical and percent yields of ethanol if 648 grams of sucrose undergoes fermentation and 349 grams of ethanol is obtained.
Some chemists believe that satisfaction of the octet rule should be the top criterion for choosing the dominant Lewis structure of a molecule or ion.
Calculate the enthalpy of the reaction: 2NO(g) + O2(g) --> 2NO2(g) given the following reactions and enthalpies of formation:
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