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5j4/(2j4)4
calculate change in heat at 25 degrees for the reaction below.
2ZnS(s) +3O2 (g) to 2ZnO(s) +2SO2 (g)
-206.0 0 -350.5 -296.8
1. Water is a good solvent
Relate this property to the role of water in plant nutrition:
Answer:
2. Water has a high specific heat.
Relate this property to changing climate and the capacity of bodies of water to
act as temperature buffer:
Answer:
3. The boiling point of water unusually high
Relate this property to questions on small water bodies drying up:
Answer:
4. Solid water is less dense, and in fact floats on liquid water.
Relate this property to the survival of aquatic organisms in temperate countries:
Answer:
- An object with a mass of 3.50 kg moves in a straight line on a frictionless horizontal surface with a speed of 2.0 m/s. Find the kinetic energy and the net work done on the object to make it reach this speed if it started from rest.
What is the equation for the reaction of calcium iodide and nickel?
Enter how many students [Max=25]: 5
Enter name of Student: John Wayne
Enter name of Student: James Bond
Enter name of Student: Bruce Almighty
Enter name of Student: Peter Parker
Enter name of Student: Tony Stark
Enter Grades for John Wayne
Prelim : 95
Midterm : 96
Final : 97
Enter Grades for James Bond
Prelim : 91
Midterm : 92
Final : 93
Enter Grades for Bruce Almighty
Prelim : 98
Midterm : 99
Final : 97
Enter Grades for Peter Parker
Prelim : 92
Midterm : 94
Final : 93
Enter Grades for Tony Stark
Prelim : 99
Midterm : 99
Final : 98
Course: Programming 101
List of Students Prelim Midterm Final Grade Rating
John Wayne 95 96 97 96 1.25
James Bond 91 92 93 92 1.75
Bruce Almighty 98 99 97 98 1.25
Peter Parker 92 94 93 93 1.5
Tony Stark 99 99 98 99 1.0
Computations
Grade = Prelim (30%) + Midterm (30%) + Final (40%)
Grade Rating
99-100 1.0
96-98 1.25
93-95 1.5
90-92 1.75
87-89 2.0
84-86 2.25
81-83 2.5
78-80 2.75
75-77 3.0
74 and below 5.0
A hydraulic lift has input and output pistons with diameters of 0.12 m and 0.48 m, respectively. If a force of 275 N is exerted at the input piston, calculate the maximum mass that can be lifted by the output piston.
A cylindrical water tank of diameter 15.0 m and height of 5.5 m contains 7.0 m3 of water. Calculate the force on the base of the tank.
In each of the following pairs, which is more likely to gain electrons(s)?
An elevator carrying 10 passengers through a height of 10 m from the ground has a mass of 2000 kg. Calculate the power required by the motor to lift the elevator if the time taken to lift the elevator to that height is 1 minute.
#339914 on Dec 2023