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If you have a 25 mL solution that contains 47 ug/dL of iron, how many grams of iron must be removed to reach a concentration of 23 ug/dL? How many moles of iron is this
A skier who starts from rest reached a speed of 8.0m/s while goind down a ski slope for 5.0s. how far does the skier travel in this time
Given the following value, tell whether the starting material or product is favored at equilibrium. delta H=6.5 kcal/mol. Is this a starting material favored, or product favored
Tumor Viruses and our Current Understanding of Cancer and How many cancers are caused by viruses?
A mixture of gases contains 5.18 g of CO, 3.65 g of NH3, and 5.01 g of O2. If the total pressure of the mixture is 2.65 atm, what is the partial pressure of each component
A football quaterback runs 15.0 m staright down the playing field in 2.50s. what are the average velocities for the three intervals
What would be the concentrations of acetic acid and sodium acetate in this solution. Would we expect this solution to be a buffer
Arrange the following elements from greatest to least tendency to accept an electron. Rank from greatest to least tendency to accept an electron. To rank items as equivalent, overlap them.
Do the pH values for the more dilute solutions approach the pH of the distilled water. What would we expect to happen if we continued to dilute these samples even further
A toddler weighs 10 kg and raises herself onto tiptoe (on both feet). Her feet are 8cm long with each ankle joint being located 4.5cm from the point at which her feet contact the floor. What is the
If 5.0 moles of an ideal gas expands isothermally at 100 degrees C to 5.5 times its intial volume, then find heat flow into a system
Compare the pH values in the dilution experiment for the strong acid(HCl) and the weak acid (acetic acid). HCl : 10^-2 : 3.03 10^-3 :4.48 10^-4:5.95 10^-5:6.55 10^-6:6.60 10^-7:6.70
In a certain experiment, the pressure of a gas depends on the volume by P=alphaV^2 + betaV^2, where alpha = 3.5 Pa/m^9 and beta = 8.2 Pa/m^6. What is the work done on the gas
Suppose 2.50 kg of 32 degrees C water is mixed with 9.30 kg of 65 degrees C water. If no heat is lost in this system, what is the final temperature of the water
a 25-kg iron cannonball is fired with speed 220 m/s. If it hit a concrete wall, how much does the temperature of the cannonball increase
Compare the pH values in the dilution experiment for each of the acids and bases used to the pH detemined for distilled water.
Calculate the number of grams of NaOH per 100ml to give a pH8.0 solution if pure water at pH7.0 is used in the experiment. Repeat this calculation for a pH6.0 solution using HCl.
A simulated bungee jumper falls off a ledge. The plot below shows the force the bungee cord exerts on the jumper as a function of distance from the ledge. estimate the work done by the bungee cord
If the actual pressure of the vapour was less than the surrounding , will molecular weight you determine (heptane) be too low or too high
The during an Apollo moon landing, reflecting panels were placed man the moon. find the distance between the astronomers and the moon
If material increases its length by 4.2% when its temperature is raised 40 degrees C, then what is its coefficient of linear expansion
If .43 g of aluminum foil was dissolved in sufficient 3M KOH solution, and the solution was acidified with 4M H2SO4, what was the theoretical yield of KAl(SO4)2 * 12H2O? If only 5.87g of alum were o
A 47 microfarad capacitor is connected to a 9 volt battery. How many electrons is this charge equivalent to
Which of the following expressions hold for 0.10 mol/L Na2HA(aq). (HA2- is the doubly-ionized form of H3A, a weak triprotic acid.)
if .43g of aluminum foil was dissolved in sufficient 3M KOH solution, and the solution was acidified with 4M H2SO4, what was the theoretical yield of KAl(SO4)2 * 12H2O