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if 500g of potassium chlorate solid decomposes and produces 303g of potassium chloride solid, how many grams of oxygen gas are produced?
Student placed 18.5 of glucose () in a volumetric flask, added enough water to dissolve the glucose by swirling, then carefully added additional water until the 100.- mark on the neck of the flask w
If 5.00 ml of a solution containing .0400 M iron is placed in a 100.0 ml volumetric flask and filled to the mark with deionized water, what will be the concentration of iron in this new solution?
If the rate increases by a factor of 10 as the temperature increases from 35 °C to 70°C, what is the activation energy for the reaction?
If you started a ride with ice packs that held 1300 g of frozen water at 0 rm{^{circ}C} , and the temperature of the water at the end of the ride was 32 rm{^{circ}C} , how many calories of heat ene
Determine the mass of lithium hydroxide produced when 0.38 g of lithium nitride reacts with water according to the follow equation: Li3N + 3H2O equals NH3 + 3LiOH.
The reactant concentration in a zero-order reaction was 6.00×10-2 {it M} after 185 s and 1.00×10-2 {it M} after 330 s. What is the rate constant for this reaction?
Calculate the volume of oxygen you would need, at 1.00 atm and 298 K, to completely oxidize 54 g of glucose.
Why is my hydrogen peroxied based iodine clock zero order with respect to sulphric acid the acid is 0.05moldm-3 and I use 25cm3 of it diluted down to 41cm3
How many grams of water can be cooled from 45^circ {rm C} to 20^circ {rm C} by the evaporation of 65 {rm g} of water?
Apply the variation function x^2(a-x)^2 for x between 0 and a, to the particle in a box and estimate the ground state energy, E_gs. Explain why the function x^2 between 0 and a cannot be used as a
A sample of argon gas occupies 125 L at 22C and .975 atm. What volume will it occupy at 60C and .825 atm?
The fired crucible is handled with (oily) fingers before its mass measurement. Subsequently in Part B.1, the oil from the fingers is burned off. How does this technique error affect the reported per
A proton in a linear accelerator has a de Broglie wavelength of 128 pm. What is the speed of the proton?
Write net Brønsted equation for lithium dihydrogenphosphate with a pH = 4.70
In a particular titration experiment a 25.0 mL sample of an unknown monoprotic acid required 30.0 mL of .200 M NaOH for the end point to be reached. What is the concentration of the acid?
How much heat (in kJ) is required to warm 11.0g of ice, initially at -10.0 C, to steam at 108.0 C? The heat capacity of ice is 2.09 J/gC and that of steam is 2.01 J/gC.
A sample of ideal gas at room temperature occupies a volume of 23.0l at a pressure of 232torr . If the pressure changes to 1160torr , with no change in the temperature or moles of gas, what is the n
Assume that a gold atom is shaped like a sphere. An atom of gold has a radius of 156 pm and a mass of 197 amu. Determine the density of a single gold atom in units of g/cm3. (1 amu = 1.66 x 10-24g)
A 486 mL sample of water was cooled from 50.0°C to 10.0°C. Assuming a specific heat of 4.184 J/K g and a density of 1.00 g/mL, find the amount of heat transferred from the water to the surro
To obtain the same antifreeze protection requires 76 of propylene glycol to replace each 62 of ethylene glycol. Calculate the mass of propylene glycol required to replace 7.00 of ethylene glycol. Th
At equilibrium, the concentration of A is 0.381 M and that of B is 0.154 M. What is the value of the equilibrium constant, Keq?
An equilibrium mixture at this temperature contains equal concentrations of bromine and chlorine, 0.022 mol/L. What is the equilibrium concentration of BrCl?
If, in a certain experiment, over a specific time period, 0.0033 mol PH3 is consumed in a 1.5-L container each second of reaction, what are the rates of production of P4 and H2 in this experiment?
A 309 mL sample of unknown HCl solution reacts completely with Na_2CO_3 to form 10.1 g CO_2. What was the concentration of the HCl solution?