1. to calulate the molarity of a solution, you need to know the moles of the solute and the?
a) volume of the solvent
b) volume of the solution
c) mass of the solution
d) volume of the solute
2. which of the following food would not taste acidic?
a) lime
b) tomato
c) orange
d) celery
3. that salt that is formed during the reaction between potassium hydroxide and hydrochloric acid is?
a) hydroxide ions in solution
b) hydrogen ions in solution
c) hydronium ions in solution
d) sodium in solution
you in advance! < 3

Na food processing facility, a spherical container of inner radius r1 5 40 cm, outer radius r2 5 41 cm, and ther- mal conductivity k 5 1.5 w/m · k is used to store hot water and to keep it at 100°c at all times. to accomplish this, the outer surface of the container is wrapped with a 800-w electric strip heater and then insulated. the temperature of the inner surface of the container is observed to be nearly 120°c at all times. as- suming 10 percent of the heat generated in the heater is lost through the insulation, (a) express the differential equation and the boundary conditions for steady one-dimensional heat conduction through the container, (b) obtain a relation for the variation of temperature in the container material by solving the differential equation, and (c) evaluate the outer surface tempera- ture of the container. also determine how much water at 100°c this tank can supply steadily if the cold water enters at 20°c.

Suppose a wire with a current is pushed upward by a magnetic field. how would the wire move if the direction of the current reversed? explain your answer.

Use the drop-down menus to answer each question. which line represents the movement of a cart with a constant acceleration? a which line represents the movement of a cart with a constant velocity? c which lines represents a cart with no velocity or acceleration? b