Solutions lecture 1(crash course)

A menu offers 2 entrees, 3 main courses, and 3 desserts. How many different combinations of dinner can be made? (A dinner must contain an entrée, a main course , and a desert.)

Consider following solutions : I: 1M aqueous glucose solution II: 1M aqueous sodium chloride solution III: 1M aqueous ammonium phosphate solution IV: 1M benzoic acid in benzene Select correct statements for the above solutions :

If K_(3)[Fe(CN)_(6)] gets ionized completely in a solution, number of particles in the solution from 1 molecule solute is …………………..

Specific gravity of a salt solution is 1.025. Quantity of the solution required that consist of 1 mole of solute (M^(@) = 60) if molarity of the original solution is 0.9M.

In some schools, AP courses, honors coures, and college prep courses carry different weights in the computation of grade point averages. A given grade may carry a weight of 2 in an AP course, a weight of 1.5 in an honors course, and a weight of 1 in a college prep course. Suppose letter grades of A, B, C, D, and F are assigned values of 4, 3, 2, 1, and 0. A student completes 6 courses with grades of a B and a C in 2 AP courses, an A and a C in 2 honors courses, and 2 As in college prep courses. What would that student's grade point average be?

In how many ways can a students choose 5 courses out of 9 courses if 2 courses are compulsory for every students?

There are 5 doors to a lecture room. Two are red and the others are green. In how many ways can a lecturer enter the room and leave the room from different colored doors?

In the course of evolution, the true coelom appeared first in

True coelom appeared first in the course of evolution in

A: 1M solution and 1 molal solution contain same mass of solute. R: 1M and 1m aqueous solution are equally concentrated.