Electrostatic forces work on anything that is charged.
<span>Usually only protons and electrons, but also some other elementary particles.
</span>d. a proton attracting an electron
An atom consists of three sub atomic particles which are protons, neutrons, and electrons. ... This nucleus is surrounded by the electrons as electrons revolve around the nucleus. Thus, we can conclude that out of the given options, a core of protons and neutrons surrounded by electrons best describes an atom.
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Answer:
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The given question is incomplete. The complete question is as follows.
From the following formula, calculate the quantities required for each of the following ingredients to make 5 lb. (avoir) of hydrophilic ointment. All values to be in g, do not include units in your submitted answer; use no more than 3 decimal places. Convert using 1 lb = 454 g. Note: all values done by mass, including the water, so this is not a q.s situation (volume is irrelevant).
Methylparaben 0.25 g
Propylparaben 0.15 g
Sodium Lauryl Sulfate 10 g
Propylene Glycol 120 g
Stearyl Alcohol 240 g
White Petrolatum 250 g
Purified Water, to make 1000 g
Explanation:
For the given quantities, the sum is 620.4 g. Now, amount of purified water (to make 1000 g of ointment) is as follows.
1000 g - 620.4 g
= 379.6 g
Now, to make 5 lb we will calculate the quantities as follows.
Formula weight = 1000 g
Therefore, desired quantity is as follows.
5 lb = 5 x 454 g
= 2270 g
Hence, this means the factor is calculated as follows.
= 2.27
Now, we will calculate the quantity of each ingredient using factor 2.27 as follows.
-
Methylparaben = 0.25 g x 2.27 = 0.5675 g
-
Propylparaben = 0.15 g x 2.27 = 0.3405 g
-
Sodium Lauryl Sulfate = 10 g x 2.27 = 22.7 g
-
Propylene Glycol = 120 g x 2.27 = 272.4 g
-
Stearyl Alcohol = 240 g x 2.27 = 544.8 g
-
White Petrolatum = 250 g x 2.27 = 567.5 g
-
Purified Water = 379.6 g x 2.27 = 861.692 g