Find the altitude, perimeter and area of an isosceles trapezoid whose sides have lengths 10 cm, 20 cm , 10 cm, and 30 cm. how??
i am kelly nicole. i want to get the answer i posted it twice.
is number 1. = 7y=20 ? ?? i dont know help me on math please/
Calculate amount (in grams) of unknown acid used for titration. You want 30 mL of titrant to get the equivalence point. Assume that the base is 0.05 M and the unknown acid molar mass is around 400 g/mol.
A buffer consists of 0.14 M KHCO3 and 0.61 M K2CO3. Carbonic acid is a dirpotic acid with Ka1= 4.5*10^-7 and Ka2= 4.7*10^-11. a) which Ka value is more important to this buffer b) what is the buffer pH?
a ball is thrown vertically upward from the ground level with an initial velocity "Vo" - V sub zero a. derive a formula for the time at w/c the ball hit the ground b. use the formula to prove that the impact velocity by the ball is -Vo
Water is leaking out of an inverted conical tank at a rate of 700.0 cubic centimeters per min at the same time that water is being pumped into the tank at a constant rate. The tank has height 10.0 meters and the diameter at the top is 3.5 meters. If the water level is rising a...
math - calculus
Suppose that water is pouring into a swimming pool in the shape of a right circular cylinder at a constant rate of 9 cubic feet per minute. If the pool has radius 3 feet and height 11 feet, what is the rate of change of the height of the water in the pool when the depth of the...
A researcher studying the nutritional value of a new candy places a 4.90 gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.75 degrees Celsius. If the heat capacity of the calorimeter is 29.50 kJ - K^-1, ...