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1. Describe the reaction of a weak acid and a strong base. In general, what will the final pH be when the reaction between equal moles of a weak acid and a strong base is complete? Explain your answer.
2. A lake in Utah has a hydronium ion (H3O+) concentration of 4.60 x 10-9 M. Calculate the pH of the water. Work must be shown in order to earn credit.
3. Before tackling this problem, be sure you know how to find the antilog of a number using a scientific calculator.
A liquid has a pH of 6.8. Write the formula for calculating the [H+] and then determine the value of [H+], making sure to include units with your answer. Work must be shown in order to earn credit.
Ocurrence and use of aldehyde, ketone, carboxylic acid, acid derivatives, ester and amide. Ocurrence and uses of alkane, alkene, alkyne, halogenated hydrocarbon, ether, epoxide, alcohol, amine
Write the structure of a different product that could have been formed if you used ethanol containing substantial amount of water instead of the absolute ethanol
The heater used to heat 1400 L of air in a hot air balloon is turned off. c) A balloon filled with helium at an amusement park is left in a car on a hot day.
Write the Lewis structure and chemical formula of the compound with a molar mass of about 70 g/mol that contains 19.7% nitrogen and 80.3% fluorine by mass
To qualify to run in the 2005 Boston Marathon, a distance of 26.2 miles, an 18 year old woman had to have competed another marathon in 3 hours and 40 minutes or less. To qualify, what must a woman's average speed have been
When the following reaction is balanced in basic solution using the lowest possible whole number coefficients, the coefficient of Cr(OH)3(s) will be: Cr(OH)3(s) + Cl2O7(aq) --> CrO42-(aq) + ClO2-(aq)
Which of the following statements are evidence that gases do not always behave ideally? Check all that apply. When two gases are mixed, they follow Dalton\'s law of partial pressures.
how much heat is produced in burning 7 mol of rmc2 rmh2 under standard conditions if both reactants and products are
Problem- An empty vial weighs 63.43 g. The vial weighs 254.75 g when filled with liquid mercury (d 13.53 g/cm3). How much would the vial weigh if it were filled with water (d 0.997 g/cm3 at 25°C)? g
The Ka value for hydrocyanic acid is 4.9 x 10/\-10. Calculate the pH of a 0.095 M aqueous solution of HCN. The Kb value for pyridine is 1.7 x 10/\-9. Calculate the pH of a 0.050 M aqueous solution of C5H5N.
How do you know if a molecule has resonance structures or does not have any structures like ethanol
3 moles of a monatomic ideal gas take up a volume of 24 cm3 at a pressure of 9 atm. Explain the volume is changed to 100 cm3. (a) If this volume change is done via an isobaric process, define what is the work done on the gas
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