Abasic observation of a star is how bright it appears. this brightness is known as the star's
a. luminosity.
b. apparent magnitude.
c. absolute magnitude.
d. absent magnitude

Here’s one way to follow the scientific method. place the missing steps in the correct position in the process

What is the value of keq for the reaction expressed in scientific notation

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н, о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.