Which of the following techniques can be used to decrease the stability of an aqueous colloidal dispersion?
A) addition of an electrolyte
B) dilution of the system by addition of water
C) both a and b
D) neither a nor b
A
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When potassium loses an electron to form K+, which electron is lost?
A) 1s B) 2s C) 3s D) 4s
This topographic map has two different contour intervals. What is the contour interval for elevations below 1000 ft.? What is the contour interval on this map for elevations over 1000 ft.? How would the upper elevations look if they had been mapped with the same contour interval as the lower elevations? How would the lower elevations look if they had been mapped at the same contour interval as the higher elevations? What is the scale of this map?
What will be an ideal response?
Distinguish between an asteroid, a meteoroid, and a comet
What will be an ideal response?
In the United States and most other developed countries, there has been an increase in the number and quality of _______________ treatment plants since the 1970's
Fill in the blanks with correct word