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The emperical formula of an organic compound was found to be C3H7. find the molecular weight and molecular formula of the compound
1.what advantage do calcium chloride pellets have over magnesium sulfate powder. 2.what advantage does decantation have over filtration for small volumes
If atmospheric pressure is 29.5 feet of water, what is the pressure in bars at the bottom of a 3 meter deep swimming pool
When 2.25 g of sodium hydroxide (NaOH) was dissolved in 150.00 g of water a value of 11.00oC was obtained for ?T. Calculate the molarity of the sodium hydroxide solution. _______ Calculate the value
1. The molecular weight of BSA is 35,000 g/mol. You have a 2% solution of BSA. You want to make 0.25 mg/ml of BSA, and you need 1 mL of this diluted solution. How much BSA and how much water will
How many grams of Ba(BrO)2 could be produced through the complete reaction of 50 mL of .40 M HBrO? Use the balanced equation Ba(OH)2 + 2 HBrO = 4H2O + Ba(BrO)2
As a bar magnet moves toward a 150-turn coil, the magnetic field (which is perpendicular to the plane of the coil) changes from 0.25 T to 0.53 T in 0.3 s. what is the magnitude of the induced curren
if titration of 20.0 mL of 1.50 M H2SO4 solution requires 25.0 mL of NaOH to reach equivalence point, what is the molarity of the NaOH titrant
At the center of a 62-m-diameter circular ice rink, a 86 kg skater traveling north at 2.75 m/s collides with and holds onto a 50 kg skater who had been heading west at 3.58 m/s
When 210.0mL of 0.350M K2CrO4(aq) are added to 210.0mL of 1.10×10^?2M AgNO3(aq), what percentage of the Ag^+ is left unprecipitated
A 22.29 g ball of clay traveling east at 3.83 m/s collides with a 44.01 g ball of clay traveling north at 4.28 m/s. What is the speed of the resulting 66.3 g ball of clay
A 0.150 M Na2SO4 Has [Ag^+] = 9.7x10^-3 M. What is the value of Ksp for Ag2SO4 obtained with these data
A 220 g bird flying along at 6.69 m/s sees a 8.2 g insect heading straight toward it with a speed of 22.66 m/s. What is the bird's speed immediately after swallowing
A 9.27-m-long glider with a mass of 545.48 kg (including the passengers) is gliding horizontally through the air at 29.02 m/s, What is the glider's horizontal velocity
Which of the following is always true for a spontaneous process at constant temperature. A) Delta S system + Delta S surroundings = q/T B) Delta S > 0 C) Delta S = q/T D) Delta system + Delta S s
A 14292 kg railroad car is rolling at 1.21 m/s when a 3365 kg load of gravel is suddenly dropped in. What is the cars speed just after the gravel is loaded
A block of mass 0.680 kg is pushed against a horizontal spring of negligible mass until the spring is compressed a distance x
MnSO4 (aq) is converted to MnO2(s) in a basic medium as oxygen gas is converted to hydroxide ion. In this case, is the sulfate ion a spectator ion
A rider on a motorcycle that hass a mass of 195 kg is traveling with a speed of 24 m/s. What is the approximate total rational kinetic energy of the wheels
A uniformly charged, thin ring has radius 10.0 cm and total charge + 15.0 nC. An electron is placed on the ring's axis a distance 30.0 cm from the center of the ring and is constraned to stay on the
Calculate the change in pH of rainwater resulting from an increase in the Pressure of CO2 from 10^-3.5 atm to 10^-3.0 atm due to fossil fuel emissions
A small, 2.00-mm-diameter circular loop with R = 1.40×10?2? is at the center of a large 110-mm-diameter circular loop. What is the induced current in the inner loop
What is the formal charge on the indicated atom in each of the following species? sulfur in SO2 nitrogen in N2H4 each oxygen atom in ozone, O3
The human reaction at operating a stop watch
The molar heat capacity of Cu(s) at 1 atm pressure has been measured over a range of temperatures from close to 0 K to 400 K. Describe how you would obtain the standard molar entropy of Cu(s) at 298