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For those pairs of atoms that must connect through ionic bonds predict the charges for each ion
How many moles of CO2 will be produced in the combustion reaction starting with the 15.02 grams of ethane.
A 25.264 g cube of aluminum is cooled to a temperature of -15.26*C. If it's placed in 250.00g of water at 35.00*C, what would the final temperature of the aluminum and water be when the system comes to equilibrium? Assume that no heat is lost.
Calculate the molarity of the following solutions. a) 0.600 mol of Na2S in 1.40 L of solution. b) 20.1 g of MgS in 851 mL of solution.
Emission spectral lines for Be^3+ has a wavelength of 253.4 nm for an electronic transition that begins in the state with n=5. What is the principle quantum number of the lower-energy state corresponding to this emission
Explain the purpose of the "Thermodynamic properties of Urea " Experiment. Also , ca you please tell me any possible sources of error
Find the pH and volume (mL) of 0.367 M HNO3 neded to reach the equivalence point(s) in titrations of
What volume of gas would you expect to generate from 1 gram of Potassium Chlorate at 250*F? R= .082 L Atm/mole K.
Explain an oxygen molecule has a mass of 5.3 x 10-26 kg. If the molecule is moving at 400m/s 1000 mpg with an uncertainty in velocity of 1 m/s, the uncertainty in position h=6.626 x 10-34 Js
Hard water contains alkaline earth cations such as Ca2+ which reacts with CO32- to form insoluble deposits of CaCO3. Will a precipitate of CaCO3 form if a 250mL sample of hard water having [Ca2+] = 8.0x10-4M is treated with the following
What is the vapor pressure (in mm Hg) of a solution of 10.5g of urea, CH4N2O, in 151.0g of water at 45.0 C? The vapor pressure of water
a what is the total electron energy for be be and be?hint you may use a symbol rather than numbers to express theenergy
heat capacity of the calorimeter which is 10.17kJ/Degree Celsius and the temperature rose 105 Degrees Celsius. How many FOOD CALORIES does this cookie contain?
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