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Smaller the average distance from the nucleus and the higher the orbital energy. Larger the average distance from the nucleus and the lower the orbital energy.
A titration of 50 mL of an unknown concentration of H2SO4 required 46.26mL of 0.1125 M NaOH. What is the molarity of the H2SO4 solution
Aluminum dissolves in HCL according to the equation written below, whereas copper does not react with HCL: 2Al+6HCL ---> 2AlCl3 + 3H2 a 35 gram sample of copper-aluminum alloy is dropped into .75
The reaction is CaO(s) + H2O(l) ? Ca(OH)2(aq) -- ?H = -83.7 kJ Assume the heat capacity of the solution is the same as pure water (4.184 J/g*°C), the density of the solution is 1.00 g/mL and the
A round bottom flask containing 30g of water at 25 C is attached to a vaccum line. The pressure in the flask is reduced until water in the flask begins to boil. Under these circumstances determine i
An isolated tube contains 1 mole of argon at 5atm on one side of a movable barrier held in place by a pin. On the other side of the barrier is 0.2 mole of neon at 0.5atm, the the whole system is at
Ammonium carbamate can dissociate into gases at 25 C according to the reaction: NH2COONH4(s) <--> 2NH3(g) + CO2(g) If sufficient ammonium carbamate is sealed in a flask, the total pressure wil
calculate the pH you would expect to measure if 15.0mL of 0.5M acetic acid were mixed with 25.0mL of 0.5M sodium acetate
Fluorine-18 is a radioisotope widely used in positron emission tomography to investigate brain activity. The half-life is 109.8 minutes. How long will it take for 2.75 ug of 18F to decay to 500 ng
The general rate law is: rate=k[A]^2. How long is the third half-life of the reaction if [A]0 is 0.080M and the first half life is 22 min
The following set of data was obtained by the method of initial rates for the reaction: S2O8^-2 + 3I^- --> 2SO4^-2 + I3^- Exp [S2O8^-2] [I-] Initial Rate (M s^-1) 1 0.25 0.10 9.00 x 10^-3 2 0.10
Could you please explain to me the purpose and what's happening when we add the MTBE and then the NaHCO3? I know it has to do something with getting rid of carboxylic acid? and then getting rid of w
The first-order reaction SO2Cl2 --> SO2 + Cl2, has a rate constant of 2.20 x 10^-5 s^-1 at 593 K. What percentage of the initial amount of SO2Cl2 will remain after 2.00 hours
when doing a synthesis of 2-chloro-2-methylbutane 1. Why must the reaction be carried out at room temp 2. Why is the crude product washed with sodium bicarbonate
The vapor pressure of water at 25 degrees Celcius is 23.8mmHg ( use the equation for calculating the vapor pressure lowering. Raoult's law to get to moles
Ethylene glycol,C2H4(OH)2, is a colorless liquid used as automobile antifreeze. If the density at 20 degree Celcius of a 4.028m solution of ethylene glycol in water is 1.0241g/mL, What is the molari
Petane and 1-butanol are organic liquids with similar molecular masses but sunstantially different solubility behavior. Which of the two would you expect to be more soluble in water
The vapor pressure of ethanol at 34.7 degrees Celsius is 100mmgh, and the heat of vaporization of ehanol is 38.6 kj/ mol. What is the vapor pressure of ethanol in mm Hg at 65.0 degree celcius
What is the difference between water on the surface of the crystals of a Hydrate and Hydrate water itself
please solve if 15.0 mL of 4.5M NaOH are diluted with water to a volume of 500.0 mL what is the molarity of the resulting solution
If the annual production of acetyl salicylic acid in the U.S.A were converted to 5-grain aspirin tablets, approximately how many tablets would there be for each person? Assume that the population is
A 0.481 gram sample of an unknown acid (HX) required 28.95 mL of 0.2103 M NaOH for neutralization to the phenolphthalein end point. What is the molar mass of the acid
(a) How many moles of acetic anhydride were represented by the 6.00mL (density=1.08 g/mL) used in the synthesis (b) How many excess moles of acetic anhydride were used- over and above the amount nee
Formation of precipitate, formation of a gas, acid-base reaction forming a weak electrolyte, acid-base reaction forming of a gas or redox. AgNO3(aq) + HCI(aq) A) Molecular equation: B) Complete ioni