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A household wine is measured to be 14.5 % v/v ethanol. What volume of ethanol would be contained in two bottles of wine if each bottle has a volume of 750 mL?
23.0 mL of anaesthetic is added to distilled water to make a 200 mL solution. What is the % V/V of the new anaesthetic solution?
A pharmacist adds distilled water to 4.00 g of a powdered drug. The final volume of the solution is 40.5 mL. What is the % W/V of the solution?
Write a nuclear reaction for the neutron-induced fission of U-235 to produce Te-137 and Zr-87? How many neutrons are produced
Determine the molar mass of the compound if boiling point constant for CCl 4 =4.95 K · kg/mol.?
What fraction of piperazine (perhydro-1,4-diazine) is in each of its three forms (H2A, HA-, A2-) at pH 8.44
Consider the combustion of ethylene, C2H4+3O2=2CO2+2H2O. If the conentration of C2H4 is decreasing at the rate of 0.036M/s, what are (A)the rates of change in concentrations of CO2 B)rate of change of H2O concentration? (2)the rate of decrease in ..
A 100ml sample of sodium bromide containde co104.62g of sodium bromide. upon evaporation, 6.280g of reside was obtained. frome this data calculate each of the folowing for the solution
Explain why can you conclude that the energy of an antibonding MO in (H2) + is elevate more than the energy of the bonding MO is lowered
Use two separate t tests to compare results from lab Coat with those from lab A and lab B at the 95% confidence level. Comments on the sensibility of the time test results.
Problem- A concentration cell consists of two Sn/Sn2+ half-cells. The cell has a potential of 0.12V at 25 ?C. What is the ratio of the Sn2+ concentrations in the two half-cells
Iron(III) oxide reacts with carbon to give iron and carbon monoxide; Fe2O3(s)+3C(s)-->2Fe(s)+3CO(g). a) How many grams of C are required to react with 2.50 mol of Fe2O3
A NaCl solution contains 20.0% NaCl by mass and has a density of 1.15 g/mL. The molarity of the solution is: (hint: assume 1000. g of this solution)
The vapor pressure of water at this temp is 22.4 torr. How many grams of each product were formed and how many grams of 2-heptene and oxygen did you start? R= 0.0820578 L*atm/K*mol.
(a) When 36.0 g H2O are mixed with 67.0 g Fe, which is the limiting reagent? (b) What mass in grams of black iron oxide is produced?
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