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How many bonds and how many lone pairs are around the sulfur of SO3? a double or triple bond counts as one bond
A. four bonds and no lone pairs
B. three bonds and one lone pair
C. three bonds and no lone pairs
D. two bonds and one lone pair
A sample of oxygen is collected by water displacement at a temperature of 35C when the barometric pressure is 752 mm Hg. What is the partial pressure of the dry gas?
0.01M HCl reacts with 3.18 g Na2CO3. Here 50 mL of HCl is required for the reaction. Calculate the volume of CO2 produced at 273 K and 1 atm.
Commercial electrolytic cells for producing aluminum operate at 5 volts and 100,000 Amperes. How long does it take to produce 1000 kilograms of aluminum
calculate how many moles of KIO3 are needed to make 50 ml of 0.20 M solution?
A 0.484g sample of impure NH4Br is treated with 25.00ml of 0.2050 M NaOH and heated to drive off the NH3. The unreacted NaOH in the reaction mixture after heating required 9.95mL of 0.0525 M H2C2O4 to neutralize.
calculate the concentration in molarity of a NaOH solution if 25.0 ml of the solution are needed to neutralize 17.4 ml of a .312 M HCl solution.
the calculation of the Ksp value be affected if the endpoint of titration was surpassed (i.e. too much HCl was added)?
calculate the moles of CO2 you would theoretically expect from 0.253 grams of an alka-seltzer tablet at 721. torr and 291. K.
What is the percent ionization of a solution made by adding 6.00 grams of CH3COOH to 100 g of water (Kb = 0.512 ?C/m) if the boiling point of the solution is 100.712 ?C? Answer in units of %.
Molten carbonate fuel cells fueled with H2 convert as much as 60% of the free energy relased by the formation of water from H2 and O2 into eletrical energy.
an Erienmeyer flask is closed by a stopper connected to a glass tube. the glass tube is sealed by a drop of mercury. if we move the whole appareatus in the diagram from a room with a temp. of of 26 degrees celcius to an outdoor yard with a temp of..
the two complimentary single strands of DNA shown below can form (at least) three secondary structures upon annealing. Name three of them.
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