If phenolphthalein is used as an indicator which of the following will be observed if excess sodium hydroxide is added to acetic acid?
A) from colorless to pink
B) from red to yellow
C) from pink to colorless
D) from yellow to red
A
Environmental & Atmospheric Sciences
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North
?
The wind in the northern hemisphere will eventually blow toward which of the following directions?
A. east B. north C. south D. west
Environmental & Atmospheric Sciences
The word "weather" is defined as
a. ?the average of the weather elements. b. ?the climate of a region. c. ?the climate averaged over a year’s time. d. ?any type of falling precipitation. e. ?the condition of the atmosphere at a particular time and place.
Environmental & Atmospheric Sciences
What happens to most of China's solid waste?
What will be an ideal response?
Environmental & Atmospheric Sciences
Solar radiation is considered ____
a. longwave radiation b. medium wave radiation c. shortwave radiation d. ultra-shortwave e. sub-wave radiation
Environmental & Atmospheric Sciences