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A buffer solution contains .11 mol of acetic acid and .14 mol of sodium acetate in 1.00 L what is the pH of the buffer after adding 3*10^-2 mol of KOH
When 1.0 g of snack cake is combusted in a constant-pressure bomb calorimeter with a heat capacity (including its water) of 10.0 kJ/°C, the temperature of the calorimeter rises by 2.24°C. How many nutritional calories (Calories) are in one serving..
when separated from a water solution CuSO4 forms a hydrate with 5 wlater molecules per formula unit. if 47 g of anhydrous CuSO4 are dissolved in water, what mass of the hydrate could be recovered from the solution.
how many carbon dioxide in kilograms is produced upon the complete combustion of 18.9 l of propanemany home barbecues
A bone sample with 2.8 g of carbon has 17.4 disintegrations per minute. How old is the bone sample in years. What percentage of the atoms of carbon in the biosphere are C-14?
A 14 mL sample of a solution of AlBr3 was diluted with water to 56 mL. A 25 mL sample of the dilute solution was found to contain 2.31 M Br-. What was the concentration of AlBr3 in the original undiluted solution
a sample of fresh grapefruit juice was filtered and titrated with the above i2 solution. a 100 ml sample of the juice
Pyridine is a weak base that is used in the manufacture of pesticides and plastic resins. It is also a component of cigarette smoke. Pyridine ionizes in water as follows: C5H5N + H2O C5H5NH+ + OH- The pKb of pyridine is 8.75. What is the pH of a 0..
How many valence electrons are there for the POCl3 molecule? Draw a reasonable Lewis structure for POCl3. Assign formal charges for the atoms in your Lewis structure. Draw a second legitimate resonance contributor for POCl3. Assign formal charges ..
calculate the number of moles of carbon dioxide formed if 23.1 ml of sodium carbonate reacts with excess hydrochloric acid.
Complete the following neutralization reaction, and identify the strong acid, strong base, weak acid and/or weak base. a. CH3COOH + NH4OH
Predict whether a precipitation reaction will occur when aqueous solutions of ammonium sulfate and calcium acetate are mixed. Write the net ionic equation.
Calculate the mass of gasoline (in kg) needed to fill up a small tank which has a capacity of 3.0 L. Assume that the density of gasoline is 0.80 g/mL
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