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What is the maximum number of hybridized orbitals that can be formed by a nitrogen atom? I know the answer is 4 but I don't understand why.
How many moles of urea (60. g/mol) must be dissolved in 100. g of water to give a 1.9 molal solution?
Calculate the of a solution prepared by mixing equal volumes of 0.21 methylamine (CH3NH2, Kb = 3.7 x 10^-4 ) and 0.61 M CH3NH3Cl.
She pours a 50.0 mL sample of water at 345 K into the calorimeter containing a 50.0 mL sample of water at 298 K. She carefully records the final temperature of the water as 317 K. What is the value of Ccal for the calorimeter?
The pKb values for the dibasic base B are pKb1 = 2.1 and pKb2 = 7.8. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.75 M B(aq) with 0.75 M HCl(aq).
Calculate how much energy in the form of heat is available from 100mL of this mixture and compare it with the amount from pure gasoline. assume the densities of ethanol and gasoline are
Standard Enthalpies of Formation: acetic and AB2 = - 25.65 kCal/ mole,A++ = -8.65 k Cal/ mole,Temperature = 10 Degree Celsius determine pK,
The rate of reaction between carbon monoxide and hygrogen to form CH3OH with respect to carbon monoxide is 1.18 *10^-4 mole/L*sec. What would be the rate with respect to hydrogen
A plumber's handbook states that you should not connect a copper pipe directly to a steel pipe because electrochemical reactions between the two metals will cause corrosion. What spontaneous redox reaction(s) might cause the corrosion
What is the rate of consumption of O2 in a combustion reaction carried out in a 11.00 L flask if 6.30 mmol of oxygen is consumed in 25.6 s?
according to the following reaction how many moles of calcium oxide will be formed upon the complete reaction of 29.3
A sample of neon gas has a volume of 2.5 L at 780 torr and 24 degrees C. How many neon atoms are in the sample
what splitting pattern would account for m/z of 105 for the compund 1 ethyl 3,5 dimethyl benzene Explain
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