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A ship sets out to sail to a point 107 km due north. An unexpected storm blows the ship to a point 126 km due east of its starting point. In what direction (as an angle from due east, where north of
Suppose 317 mL of 4.14 M HCIO4 Solution is added to enough water to make a total of 7.70 L. What is the molarity of HCIO4 in this new solution?
When you see a traffic light turn red you apply the brakes until you come to a stop. If your initial speed was 12m/s, and you were heading due west, what was your average velocity during braking? as
At a particular instant in time a particle has a velocity of 6.00 m/s. Over the next 4.00 s it experiences an average acceleration of -3.00 m/s2. Determine its velocity at the end of this three-sec
The rate constant for a certain chemical reaction is 0.00250 M1 s1 at 25.0C and 0.0125 M1s1 at 50.0C. What is the activation energy for the reaction, expressed in kJ mol?
To give a 22- child a ride, two teenagers pull on a 3.8- sled with ropes, as indicated in the figure . Both teenagers pull with a force of 55 at an angle of 35 relative to the forward direction, whi
Describe how the processes of transportation, deposition, and lithification influence the character of sediments. Use three detrital (clastic) and two chemical (non-clastic) rocks to illustrate.
A ball is dropped from a height of 3 meters and rebounds from a height of 2 meters. What is the velocity of the ball before it hits the floor? What is the velocity of the bell before it leave the fl
what is the maximum work that could be be obtained if the tank, the device and the surroundings are maintained at 298? Assume the volume of the device is much smaller than the tank volume.
If a raindrop weighs 50. mg on average and 5.1x10^5 raindrops fall on a lawn every minute, what mass (in kg) of rain falls on the lawn in 2.6 h?
This reaction has a 65.0% yield. How much N2 is consumed if 13.6 g of FeN are produced?
What is the pH of this solution? How many mL of 12 M HCl must be added to 0.500 L of the original buffer to change its pH to 9.00?
The speed of sound is 344 m/s. You have built a really fantastic car that can really go fast. If the car can accelerate at 22.4 m/s, how much time till you reach the speed of sound? How many kilomet
It was found that 0.475 g of V was deposited on the cathode. What was the original oxidation state of vanadium?
A 15.0 kg object is moving with velocity of 17.5 m/s2. A force of -50 N acts on the object and its velocity becomes 3.20 m/s2. What is the displacement of the object while the force acts?
Assume that patient blood lead levels are 0.560 , that total blood volume is 5.1 , and that 1 of succimer binds 1 of lead. What minimum mass of succimer in milligrams is needed to bind all of the le
what is the enthalpy change needed to change 3kg of liquid water at 0C to steam at 0.1MPa and 150C
What mass of HgO was originally present? The vapor pressure of water is 23.8 mm Hg at 25.0°C. Use molar masses with at least as many significant figures as the data given.
What is the product of a modified perkin reaction using 3-benzoylpropionic acid + benzaldehyde + sodium acetate + acetic anhydride when heated in 100 degrees celsius?
What is the total number of liters of gas formed when 228g NH4NO3 is decomposed?
The force of the wind on the sails of a sailboat is 370 N north. The water exerts a force of 170 N east. If the boat (including crew) has a mass of 320 kg, what are the magnitude and direction of it
The atomic weight of a newly discovered el- ement is 10.600 amu. It has two naturally occuring isotopes. One has a mass of 10.000 and a natural abundance of 70.000%. What is the isotopic mass of the
What is the volume, in liters, of 0.100 g of C2H2F4 vapor at 0.0928 atm and 22.3°C?
The temperature of the resulting solution increased to 35 degrees C. How much heat is in kilojoules was released by this reaction?
A river has a current with a velocity of 1.5 m/s due east. A boat whose speed in still water is 5 m/s directed north a cross a 100 m wide river. with what speed will the boat cross the river?