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Problem- A beaker with 1.60*10^2mL of an acetic acid buffer with a pH of 5.000 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 5.20mL of a 0.450M HCl solution to the beaker. How much will the pH change? The pKa of acetic acid is 4.760.
State your answer by means of three significant figures.
The unit cell in a crystal of diamond belongs to a crystal system different from any we have discussed. The volume of a unit cell of diamond is 0.0454 nm^3 and the density of diamond is 3.52 g/cm^3. Find the number of carbon atoms in a unit cell of..
zinc citrate zn3c6h5o72is an ingredient in toothpaste. it is synthesized by the reactionof zinc carbonate with citric
how much must you perspire to maintain a constant body temperature assuming no other energy changes and all the calorie content of the soda is released as heat?
lots of space between gas particles B. little to no space between gas particles C. nothing about the space between gas particles can be inferred.
State the balanced equation for the ionization of the weak base pyridine, C5H5N in water, H2O. Phases, such as (aq) or (l), are optional.
Does this verify that only a single detergent compound is in the extract. What specifically can you do to gain more information about the composition of the shampoo extract
Calcium and Magnesium carbonates occur together in the mineral dolomite. Suppose you heat a sample of the mineral to obtain the oxides,CaO and MgO, and then treat the oxide sample with HCl. If 7.695g of the oxide sample requires
What is the molarity of a solution made by dissolving 74.8 g of strontium perchlorate in sufficient water
In a 0.10 M solution of a weak diprotic acid H2A the species present in highest concentration (besides water) would be
For each line in the hydrogen spectrum, how do you deduce n2 (the upper state) and n1 (lower state) and if you could record the absorption spectrum of hydrogen gas, what would it look like?
How much heat is required to boil 48.5g of water at its boiling point? Express your answer numerically in kilojoules. Please answer with a decimal
The temperature of the calorimeter rises from 22.5 to 25.7 degrees C. Find the nutritional caloric content (Cal/g) of peanut butter. BASED on your calculation, how many Calories are in on serving of peanut butter
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