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In a lab, you are given a block of aluminum. You measure the dimensions of the block and its displacement in a container of a known volume of water. You calculate the density of the block of aluminum to be 2.68 g/cm3. You look up the density of a block aluminum at room temperature and find it to be 2.70 g/cm3. Calculate the percent error of your measurement.
Question- a 100.0 ml aliquot of .100 M diprotic acid H2A (pk1=4.00, pk2=8.00) was titrated with 1.00 M NaOH. Find the pH at the following volumes of base added 11, 15, 19, 20, and 22ml
an ibuprofeninfant suspension has 100 mg 5.0 ml suspension. the suggested dose 10 mgkg body weight. determine how many
The 9.163 g their air Air Cs equals 1005J/KG c in an inflated balloon is warmed over a toaster and increases in temperature by 11°C the balloon expands against one atmospheric pressure and changes volume for one liter to two liters
100 mL of a buffer that consists of 0.20 M NH3 and 0.20 M NH4Cl is titrated with 25 mL of 0.20 M HCl. Calculate the pH of the resulting solution given that the Kb for NH3 is 1.8 x 10-5.
A 40-cuft tank is filled with air at 14.7psia and 80 F, The tank also contains a 15-lb block of dry ice solid CO2, specific gravity of 1.53 based on water. After the dry ice sublimes, the temperature is 30F. Explain what is the pressure? Presume i..
a ballon filled with 0.505 mol of gas contracts reversibly from 1.0 L to 0.10 L at a constant temperature of 5.0 degree celsius. In doing so it loses 1270 J of heat. calculate w, q, and U for the process.
Balance the following equation in basic solution. indicate which reactant becomes oxidized during the reaction, which reactant becomes reduced
you have 1005.3 g of a bleach solution. the percent by mass of the solute sodium hypochlorite naocl is 3.62. how many
The rotation of this solution increases overtime to +52.5 degrees. Calculate the percentage of the two forms of D-glucose at equilibrium.
While 46g of I2 and 1.0g of H2 are heated at equilibrium at 450 Celsius, the equilibrium mixture contains 1.9g of I2 a) Explain how many moles of each gas are present in the equal mixture
Write the balanced equation for the solvolysis of 2-chloro-2-methylpropane in water. 2. If it took 106 s for the color to change after 2.00 mL of NaOH were added to the flask, calculate the concentration of 2-chloro-2-methylpropane present in solu..
What is the osmotic pressure, in atm, of a solution formed by dissolving 14.1 g of CaBr2 in 0.670 L of water at 53.4 oC? (R = 0.0821 L-atm/mol-K; 0 oC = 273 K)
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