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Consider the points (-10, -12) and (-2, 20).
(a) State the midpoint of the line segment with the given endpoints. (No work required)
(b) If the point you found in (a) is the center of a circle, and the other two points are points on the circle, find the length of the radius of the circle. (That is, find the distance between the center point and a point on the circle.) Find the exact answer and simplify as much as possible. Show work.
Ammonia and preheated air are mixed to form a gas containing 15.0 mol% NH3 at 500°C. If ammonia enters the mixing unit at 30°C at a rate of 600 kg/h and heat is lost from the mixer to its surroundings at a rate of 12.00 kW, determine the temperatu..
Calorimetry is a method used to measure enthalpy, or heat, changes that occur during chemical processes. Two common calorimeters are constant-pressure calorimeters and constant-volume (or "bomb") calorimeters
what is the ph of a solution prepared by mixing 15.00 ml of a 0.3005 m solution of lactic acid with 15.00 ml of 0.1515
A 3.50g sample of histidine dihydrochloride (fw 228.08g/mol) in water and diluting to a final volume of 50.00ml. The resulting solution is then titrate with 0.500M NaOH. calculate the pH at each of the following points
If a student weighed out a 500. mg tablet of vitamin C, measured to the nearest 0.001g and recovered 0.254g of ascorbic acid. What is the percent mass of vitamin C in the tablet
How many joules of heat are given off when 5 g of water cool from 75 degrees C to 25 degrees C?
What is the pH of the resulting hydrochloric acid solution? Part B 0.75g of sodium hydroxide (NaOH ) pellets are dissolved in water to make 4.5L of solution. What is the pH of this solution?
A balloon is inflated with 0.2494g of helium to a pressure of 1.26 atm. If the desired volume of the balloon is 1.25L, what must the temperature be in degreeC
Paracetamol is similar to asprin in that p-aminophenol is reacted with acetic anhydride and yet the amino group is acylated and not the hydroxy group. Why
Calculate the energy and frequency of a photon with a wavelength of 573.8 nm. Assuming a pathlength of 1 cm, calculate compound X's molar absorptivity.
pottassium bromide kbr is soluble in the extent of 64 g per 100 g of h2o at 20 degree c. is the solution saturated or
What are some of the general properties that distinguish metals
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