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Problem- We need 1.00L of a propionic acid/propionate (Ka= 1.30x10-5) buffer with a starting pH of 4.850. It must be able to resist the addition of 12.00mL of 0.500M NaOH while remaining below pH 5.250. How many mL of 1.25M stock acid and 0.500M NaOH base solution must be used in preparation of this buffer?
Please demonstrate the entire work. I am thanking you in advance
You have just returned from a twenty five mile jog around the track at the Student Recreational center. As sweat drips from your chin, you contemplate the concept of fluid replacement, but can't find a bottle of Gatorade in your frig
during lightning flashes nitrogen combines with oxygen in the atmosphere to form nitrogen monoxide no which then reacts
the temperature of the resulting solution rises from 25.00°C to 37.90°C. If the specific heat of the solution is 4.18 J/(g · °C), calculate ?H for the reaction, as written.
a three carbon species that has a carbon level of zero at each carbon atom. b) two compounds that contain three carbon atoms and have a carbon atom with a carbon level of 1.
Calculate the percent by mass of zinc in the post-1982 pennies using following information: the total mass of each penn is 2.500 g, the density of copper is 8.96 g/mL
If the reaction 2 NO(g) + O2(g) ? 2 NO2(g) is carried out at standard conditions, what is the total pressure. What is the temperature under standard conditions
A mass of 95 g of ice at 0C is combined with 105g of water at 25 C the final temperature of the mixture is 0 C what mass of ice melts. (heat of fusion=333J/g specific heat capacities ice=2.09, liquid water =4.184)
water from 20 degrees Celsius to 100 degrees Celsius. What is the delta H of combustion of the propane. What is the sign (positive or negative) of delta H?
1. what mass of naohsnbspmust be added to 300 ml of hcl 0.25 m in order to completely neutralize this acid?2. during a
What is the total amount of heat energy transfer required to change 0.86 mol of ice at -22 oC to steam at 100 oC
What was his wavelength at his average speed, if he weighed 207 lbs at the time of the race?
A sample of gas is made entirely of carbon dioxide and water, and there are 259 moles of carbon dioxide and 513 moles of water. If the total pressure of the sample is 21 atm, what is the partial pressure of each gas?
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