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Balance the following equation in acid solution and determine if it is spontaneous when all ion concentrations are 0.010 M and the gas pressure is 1 atm. NO3¹? (aq) + Sn²? (aq) ? NO(g) +Sn4? (aq)
State the circumstances under which you would use either a reagent grade chemical or a primary standard.
What is the half life of the decomposition of A at 60C? e)If the concentration of a is found to be 2.78 x 10^-3 mole/L at t= 1.80 s and 60C, what is the initial concentration of a at 60C?
If the enery of the products is less than the energy of reactants then the speed of collision has no effect on the rate of the reaction. B) The energy of the collision of molecules must be great enough to overcome the bond energy of the products.
When 2 moles of Mg3N2 are allowed to react with water to form ammonia gas and magnesium oxide, how many moles of H2O are required?
A calibration curve for absorbance versus the concentration of the chemical indicator crystal violet is found to have a slope of 19. If a sample of unknown concentration has an absorbance of 1.32
What is the freezing point of an aqueous solution of a nonvolatile solute that has a boiling point of 102.5°C? For water Kf = 1.86°C/m and Kb = 0.52°C/m.
How many liters of oxygen,O2,are required for the complete combustion of 1/2 mole of pentane,C5H12 at standard conditions
The mass of a beaker is 123.2537 g. After carrots were added to the beaker, its mass is 128.2671 g. The sample was then placed in the oven to remove water.
An isotonic solution is described as 0.92% NaCl (g/mL). Would this also be the required concentration for isotonic solutions of other salts, such as KCl, MgCl2,
Gasohol contains ethanol (C2H5OH) which when burned reacts with oxygen to produce CO2 (g) and H2O(g). How much heat is produced when 12.5 grams of ethanol burns.
How much heat is required to melt 15 grams of ice at 0C? How much heat is released when 100 grams of steam condenses at 100C? If a system of ice and water has a mass of 12 grams
Consider the following chemical equation. H2(g) + I2(g) ? HI(g) Assuming all gases are at the same temperature and pressure, how many milliliters of hydrogen iodide are produced from 725 mL of H2
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