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1. The acidity of a water sample can be measured by a neutralization reaction with a solution of sodium hydroxide, NaOH(aq). what is the concentration of hydrogen ions in a water sample if 100 mL of the sample is neutralized by the addition of 8.0 mL of 2.5x10-3 mol/L sodium hydroxide ?
2. Write the net ionic equation for this reaction: Mgcl2(aq) + NaOH(aq)-Mg(OH)2 (s) + NaCl(aq)
3. What volume of 1.25 mol/L potassium iodide solution can you make with 125 mL of 3.00 mol/L potassium iodide solution ?
what is the theoretical yield for the equation
In a living organism, the decay of C-14 produces 15.3 disintegrations per minute per gram of carbon. The half-life of C-14 is 5730 years. A bone sample with 2.8 g of carbon has 25.0 disintegrations per minute. How old is the bone sample in years? ..
an element has three naturally occurring isotopes with the following masses and abundances in parenthesis 27.977 amu
benzene has a heat of vaporization of 30.72 kjmol and a normal boiling point of 80.1 degrees c. at what temperature
Explain what is the temperature in kelvin of 0.64mol of gas at a pressure of 1.4atm as well as a volume of 12.3L
Question- Describe how you would prepare 465 ml of a .3550 M potassium nitrate solution starting with a) solid potassium nitrate b) 0.750 M potassium nitrate solution
How many moles of cobalt (Co) atoms are there in 5.00 x 10^9 (5.00 billion) Co atoms? Enter your answer in scientific notation.
How many grams of lead chromate form when a 1.00-g sample of Pb(NO3)2 is added to 5.0 mL of 1.00 M K2CrO4 solution.
The ion-accelerating voltage in a particular quadrupole mass spectrometer is 5.00 V. How long will it take a singly charged cyclohexane ion to travel the 15.0 cm length of the rod
Subsequent to 50.0 min, 32.0% of a compound has decomposed. Explain what is the half-life of this reaction assuming first-order kinetics
The cell potential of the following electrochemical cell depends on the gold concentration in the cathode half-cell: Pt(s) | H2(g,1atm) | H+(aq,1.0M) | Au3+(aq,?M)|Au(s).
Explain which of the following choices are conjugate acid-base pairs and will produce a buffer solution. Please explain your reasoning. There may be more than one correct choice.
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