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How many grams of NO(g) can be formed from 5.0 moles of NH3(g) if there is sufficient O2(g) to use all of the ammonia?
Calculate the amount of energy in kilojoules needed to change 243 g of water ice at -10 rm ^{circ}C to steam at 125 rm ^{circ}C. The following constants may be useful:
A lead fishing weight with a mass of 41 g absorbs 146 cal of heat. If its initial temperature is 54°C, what is its final temperature?
A 265- flask contains pure helium at a pressure of 757 . A second flask with a volume of 485 contains pure argon at a pressure of 714. what is the partial pressure of helium.
Using stirling's approximations and lagrange's method of undetermined multipliers. determine the expressions for the distribution of N particles.
A zero-order reaction has a constant rate of 3.00×10^-4M/s . If after 65.0 seconds the concentration has dropped to 1.50×10^-2 M , what was the initial concentration?
Assuming that radiation with 15.0 cm is used, that all the energy is converted to heat, and that 4.184 J is needed to raise the temperature of 1.00 g of water by 1.00 C, how many photons are necessa
What is the percent yield of a reaction in which 298 g phosphorus trichloride reacts with excess water to form 135 g HCl and aqueous phosphorus acid (H3PO3)?
When 2.45 g of an unknown weak acid HA with a molar mass of 85.0g /mol is dissolved in 250.0g of water, the freezing point of the resulting solution is -0.256 C. Find Ka of unknown weak acid.
What is the expression for the equilibrium constant, Kc, for the following heterogeneous reaction?
190 mL of an HCl solution with pH of 2.60 is added to 200 mL of an HNO3 solution. The resulting pH is 1.40. What was the pH of the original HNO3 solution?
A basketball is inflated to a pressure of 1.90 atm in a 24.0°C garage. What is the pressure of the basketball outside where the temperature is -1.00°C?
For the following processes at 700 degrees celcius, what is the partial pressure of each gas if the total pressure is 0.75 at equilibrium?
using a sample of a compound containing only oxygen and chlorine reacts with an excess of h2 gas to give 0206 g water and 0278 g hcl clxoy in
1 one of the standard solutions had an abnormally low absorbace reading causing a less positive slop for the data plota will the
following reactions1 naoh co2 m nahco3 m k12nahco3 h na h2co3 k23 2nahco3 m nahco32 m k3 kis are the rate constantssuppose nahco3 is a
various types of medicines use in daily life and classify them into analgesics antipyretics antibiotics sedatives
crystalline solids are well-ordered arrays of atoms or molecules crystalline solids may be metallic solids molecular solids or ionic solidsclassify
a solution is made by dissolving 200 g of hcl in 80000 ml of water calculate the ph of the solution if 00400 g naoh is added to 100 ml of this hcl
verify the law of multiple proportions for an element x which forms oxides having percentages of x equal to 774 632696 and
classify each reaction and give the name of all the chemical formula involved for each number1na2co3s sio2s -gt na2sio3l co2g22 mgno32s -gt 2
explain how le chateliers principle affects the extent of the dissociation of acetic acid in a buffer that is 010 m acetic acid and 010 m acetate ion
what is the theoretical yield of vanadium that can be produced by the reaction of 400 g of v2o5 with 400 g of calcium based on the following chemical
1list all the strong aqueous acids what is the difference between a strong acid and a weak acid how do the concentrations of the strong and weak
two thermometers a and b are wrapped in pieces of gauze the gauze around thermometer a is moistened with water and the gauze around thermometer b is