PV = nRT
n = PV/RT
n = (.117)(3)/(.0821)(273+80)
n = .351/28.98 = 0.012 moles
The formula of density is mass / volume
This means that
- high mass, low volume = high density
- high mass, high volume = so-so
- low mass, high volume = low density
From the graph shown,
D has the lowest density because it has low mass yet high volume.
Answer:

Explanation:
The first thing to have in mind is that the Ksp (constant of solubility) gives you an idea of how much soluble a salt is. <u>If the concentration of ions of that salt exceeds the kps, the salt will precipitate</u>.
The Kps of all these salts are very small compared to the 0.1 M concentration of the anions so all of them will precipitate.
The smaller the constant, the faster the salt precipitates
Having that concept in mind, the order of precipitation from first to last would be:

Answer:
D
An electric circuit is best described as a loop.
the flow of electrons
Explanation:
Answer:
3 valence electrons
Explanation:
Aluminum has three valence electrons. Valence electrons are found in the outermost shell of an element and are responsible for its valence.