Waters freezing point in Celsius is 0 and 273.15 Kelvin (or 273 rounded to a whole number.
Answer:
Explanation:
Your B-L Acid is a proton (Hydrogen, H+) donor, and your B-L base is a proton acceptor. This means that the base will take a hydrogen from your acid. NO2- is a B-L base, and you can tell it is a base by the negative charge it possesses. This means that it has a lone pair that wants to grab one of the hydrogens from NH4+, the B-L acid. In scientific words, the NO2- is a nucleophile and NH4+ is an electrophile. The result of NO2- grabbing that hydrogen from NH4+ is that NO2- becomes HNO2 (your conjugate acid) and and NH4+ becomes NH3 (you conjugate base). Basically, any time a B-L acid loses a proton, its equal product will be its conjugate base, and any time a B-L base gains a proton, its equal product will be its conjugate acid.
I hope this helped explain the concept behind Bronsted-Lowry acids and bases! Good luck with your class and please don't forget to give a positive rating! :-)
The answer is 1) gained
Always <span><span>think "into" for "endo" (energy goes in), and "exit" for "exo" (energy is released).</span> </span>
Hope it helps ^-^
Answer:
Environmental cost
Explanation:
because ur damaging the environment (water)
Answer:
Exposure of a red blood cell to a hypotonic solution causes swelling and eventual bursting of the cell membrane upon prolonged exposure.
Exposure of a gram positive bacterial cell causes the flow of water into the cell however, its rigid cell wall protects it from bursting.
Explanation:
A red blood cell has a cell membrane but no rigid cell wall. The inside of a red blood cell is <em>hypertonic</em> (contains more solutes like DNA, proteins) therefore, an exposure to a <em>hypotonic</em> solution ( solution with less solutes and more water), causes water to flow into the cell membrane by osmosis.
Osmosis is the movement of fluids from a region of higher concentration to a region of lower concentration. This creates a balance in fluid contents across both environments.
After prolonged exposure to the<em> hypotonic</em> solution, the flexible cell membrane swells and eventually bursts.
A gram positive bacterial cell has a rigid cell wall and a cell membrane. When exposed to a <em>hypotonic</em> solution, water flows from the outside environment to the interior of the cell by osmosis through the cell wall and membrane. The rigid cell wall of the bacterial cell however, contains the swelling and prevents the cell from bursting.
