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What fragmentation would give rise to the peak at m/z 45 in the Mass Spectrum?
a. Loss of hydroxyl group.
b. Loss of methyl group.
c. Loss of ethyl group.
d. Loss of isopropyl group.
what fraction of the day's energy does walking one hour represent? How many kilograms of water would have to be evaporated if this were the only means of heat loss. (The heat of vaporization of water at 35 degree celsius is 2400J/g).
A sample of gas is heated. During the heating process, the volume of the gas increases 1.7 times. If the initial temperature of the gas is 80°C, what is the final temperature of the gas.
Nitrogen boils at -320F What is the temperature on the Celsius scale. Please show your solution to problem
A solution is made by combining 500ml of .10M HF with 300ml of .15M NaF. What is the pH of the solution? (Ka=7.2e-4 for HF)
At its boiling point, the vaporization of 0.579 mol CH4 requires 4.76 kJ of heat. What is the enthalpy of vaporizating of methane?
What chemical tests might be used to ditinguish between pentanal and 2-pentanone; between benzyl alcohol and diphenylmethanol?
You are given a box containing at equilibrium at 1000 K 0.102 moles/liter NH3, 1.03 moles/liter N2, and 1.63 moles/liter H2 for the reaction N2(g)+3H2(g)=2NH3(g). Calculate Kp
what is the net ionic equation to show the formation of a precipitate (insoluble salt) when the following solutions are mixed. write none if no insoluble salt forms. a)AgNo3(aq) + Na2SO4(aq). b)KCl(aq) + Pb(NO3)2(aq). c)CaCl2(aq) + (NH4)3PO4(aq). ..
If a solution containing 17.76 g of mercury(II) perchlorate is allowed to react completely with a solution containing 5.102 g of sodium sulfate, how many grams of solid precipitate will be formed.
What would the product be in an aldol condensation and dehydration reaction for 4-methoxybenzaldehyde
Aqueous solutions of nickel(II) sulfate and mercury(I) nitrate react to give aqueous nickel(II) nitrate and a mercury(I) sulfate precipitate
What is the pH at the equivalence point when 100.00 mL of a 0.200 M solution of acetic acid (CH3COOH) is titrated with 0.10 M NaOH to its end point?
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