Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
The radius of a xenon atom is 1.3×10-8cm. A 100-mL flask is filled with Xe at a pressure of 1.5atm and a temperature of 295K. Calculate the fraction of the volume that is occupied by Xe atoms.
Sketch the reaction energy diagram for this reaction. Compare the amounts of reactants and products that will be present when the system reaches equilibrium.
A mixture of three gases has a total pressure of 1,380 mmHg at 298 K. The mixture is analyzed and is found to contain 1.27 mol Co2, 3.04 mol CO, and 1.50 mol Ar. What is the partial pressure of Ar?
Explain how Le Chatelier's Principle affects the extent of the dissociation of acetic acid in a buffer that is 0.10 M acetic acid and 0.10 M acetate ion.
Phosphorus-32 has a half-life of 14.0 days. Starting with 4.00g of 32P, how many grams will remain after 42.0days ?
What volume of 0.105 M lead(II) nitrate is required to react with 100.0 mL of 0.120 M potassium chromate? What mass of PbCrO4 solid forms?
The temperature of the water in this pool increases by 2.00? C when it is heated by the Sun for 6.00 hours. Calculate the energy absorbed.
Explain whether this process violates the second law of thermodynamics or not. Make a quantitative argument to support your answer.
The standard heat of formation for H2O(g) is -241.8 kJ/mol, and for NaOH(s) it is -425.6 kJ/mol. What is the enthalpy change for the reaction between Na(s) and H2O(g) to produce NaOH(s) and H2(g) pe
Explain and talk about the global warming thats taking place, including talks about the current climate change and what is the increase in rate of change and how does it affect the population?
When a 6.00-g sample of KCl is dissolved in water in a calorimeter that has a total heat capacity of 6.019 kJ·K-1, the temperature decreases by 0.230 K. Calculate the molar heat of solution o
61.0 mL of a 1.40 M solution is diluted to a total volume of 268 mL. A 134-mL portion of that solution is diluted by adding 187 mL of water. What is the final concentration? Assume the volumes are a
If the simulation does not give a precise quantitative reflection of Graham's Law, what could be done to improve the quantitative estimate of the simulation?
An aqueous solution contains 10% ammonium by mass and has a density 0.99 gcm-3 . Calculate hydroxyl and hydrogen ion concentration in this solution. if Ka for ammonium ion = 5.0 x 10^-10.
What was the final temperature of the gold if the initial temperature was 22.0°C? The specific heat of gold is 0.129 J/(g·°C).
15.0 moles of gas are in a 8.00L tank at 24.6°C . Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300L2
How many moles of sodium phosphate are required to react completely with 4.6 mol of calcium nitrate to form sodium nitrate and calcium phosphate?
In a coffee-cup calorimeter, 1.70 g of NH4NO3 is mixed with 79.0 g of water at an initial temperature of 25.00°C. After dissolution of the salt, the final temperature of the calorimeter contents
Dilute solutions of NaCl, Na2SO4, and Na2S are available to separate the positive ions from each other. In order to effect separation, the solutions should be added in which order?
A sample of a gas in a cylindrical chamber with a movable piston occupied a volume of 4.626 liters when the pressure was 0.983 atm and the temperature was 27.2 °C. The pressure was readjusted to
If 80.0 g of ethylene and 125 g of HCl are allowed to react at atmospheric pressure and the volume change is -63.9 L? What is the value of (in kilojoules) for the reaction?
What volume of 3.00M HCl in liters is needed to react completely (with nothing left over) with 0.500L of 0.200M Na2CO3?
A 35.6g sample of ethanol is burned a bomb calorimeter, according to the following reaction. If the temperature rose from 35.0 to 76.0c and the heat capacity of the calorimeter is 23.3kj/c what is
A 757 mL gas sample at STP is compressed toa volume of 118 mL, and the temperature isincreased to 39 degrees C. What is the new pressureof the gas in Pa?
How much bacterial tissue is produced in a treatment plant for every 1.0 x 10^4 of wastewater containing 3.0% NH4+ ions by mass?