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H3PO4(aq) + NH3(aq)H2PO4-(aq) + NH4+(aq)
HF(aq) + H2O(l)F-(aq) + H3O+(aq)
What is the percentage of each element in this substance - Obtain the molecular formulas of both compounds.
Draw a structure containing only carbon and hydrogen that is a chiral alkyne with six carbon atoms. (Wedge/dash bonds are omitted for simplicity.)
The Rb-Sr data given below are for whole-rock samples from amphibolite metamorphic facies of theLewisian gneiss complex in Scotland (Moorbath et al., 1975), and the Sm-Nd data are for whole-rocksamples from granulite metamorphic facies of the same..
Wood and oxygen are two reagents required to keep a campfire burning. identify the limiting and excess reagent: a) The fire dwindles over time. b) A carbon dioxide fire extinguisher puts out the flame.
Question- Predict the ground- state electron configuration of the following ions. Write answers in abbreviated form, that is, beginning with a noble gas in brackets.
What is the molality of a solution of 50.0 g of propanol(C3H7OH) in 752 mL water if the density of water is 1.00g/mL
Compute the activation energy for the flashing process. When At 29 o C the average rate is 3.3 flashes every 10 seconds; at 23 degree Celsius the average rate
a pigment suspected of being contaminated with arsenic is treated to convert any arsenic present into a solution of
Problem- The enzyme succinoxidase catalyzes the oxidation of succinate. At 40 degrees the rate of this reaction is 4.83 times as fast as it is at 20 degrees. Determine the activation energy of this reaction.
If a gas cylinder has a pressure of 2250 psi at 25 C, what is the pressure in the same gas cylinder at 40 C
Question- in the photochemical decomposition of a certain cmpd, light intensity of 5.4 x 10^-6 einsteins s^-1 was employed. Assuming the most favorable conditions, estimate the time needed to decompose 1 mole of the compound.
When the flask is allowed to cool the vapor condenses and aire again refulls the flask. Re weighing the flask and figure out the the wight of the unknown vapor which filled the flask during the boiling. Explain why it is not necessary to know the w..
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