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Friend drove her home in the car traveling at 25 mi/hr. Lois took 1.5 hr longer to go to the friend's than to return home. How many hours it took Lois to ride to friend's house?
At 3:10P.M. skydiver jumps from the airplane at the altitude of 15,000 feet. At 3:10:26 at the altitude of 4200, skydiver opens parachute. Determine skydiver's average speed during 26-second free-fa
The passenger train's speed is 60 mi/h, and the freight train's speed is 40 mi/h. Passenger train travels same distance in 1.5 h less time than freight train. How long each train takes to make trip?
Local train heading for Westford at 60km/h and express train heading for Eastford at 80km/h pass each other at Centerville during heading in opposite directions along the straight roadbed.
Fifteen minutes later, Sandy left the home and walked at 8 km/h toward Sue's house. If Sue lives five km from Sandy, at what tme they met?
Write the equation for the problem which associates time and distance, where t= time Tory traveled on state highways.
Create the 90 % confidence interval with margin of error for proportion of all adults who are smokers? What must be minimum sample size to keep Margin of error under 1%?
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., State the importance of pastoral and forest products in the medieval economy
I need help, What are the types of muscle tissues? What are the morphological features that differentiate those types?
Determine the value of Kp for the equilibrium above, after the reaction the total pressure inside the flask was calculated to be 6.10atm if the 24.0 percent of the O2reacted.
Discuss how long will it take a 10.0 - gram sample of 14 C to form the 5.0 grams of nitrogen gas, when the half life of 14C is 5760 years.
Explain what approaches seem to represent the best strategy for obtaining one? Draw the expected difficulties with attempted the syntheses of a one-coordinate complex.
Calculate the values of Δ0 and B' where the following absorption bands are found in the spectrum of [Cr(CN)6]3-: 264nm(charge transfer), 310 nm, and 378nm.
Calcium carbonate which is having 1.0 g reacts with 1.0 mL of a 6.0M nitric acid solution inside a sealed 1.0L container having the air (80% N2, 20%02). Determine the total and partial pres
If 10% of that light shines on your chemistry text, determine the numbers of photons per second shine on the book from a 75-watt bulb? Electric power is typically stated in units of watts (1watt = 1
Calculate an aromatic hydrocarbon? Explain how can you recognize an aromatic compound from its structure?
What sugar is formed when the starch is digested? Explain what type of chemicals reaction is involved? Explain how does the dichromate-chromate equilibrium depend on the Hydrogen ions?
Determine the emergency contraceptives? How do they work and calculate a local anesthetic? Explain what an antagonist is and what structural feature is shared by all the tetra cyclones?
At a beginning concentration when the dinitrogen peroxide is placed in a flask which is having 1.0 M at 298 K and allowed to come to equilibrium with nitrogen dioxide according to the reaction
A 1.00 u g sample of a radioactive material contains 6.0x1014 nuclei. After 48 hrs 0.25 ug of the material remains. Determine the half life of the material?
How can calculate the pH of a solution of when it is having 0.01MHNO3 How can determine the concentration of hydroxide ion at PH 10
Assume the acidity observed in the human gastric juice is totally due to the presence of hydrochloric acid (HCl). If the observed pH in the gastric juice is equal to 2.00
A aqueous solution which is having a 250 ml M contains the 1.560 gm of ammonium chloride (NH4Cl) pKb of NH4OH is 4.757
If the pKa value of benzoic acid is 4.2 determine the resulting pH when a pharmacy student prepared an acidic buffer solution containing the equal concentrations of benzoic acid and the