Boyle's law<span> states that, at a </span>constant temperature<span>, the </span>volume of<span> a given mass </span>of gas<span> varies inversely with </span>pressure<span>. ... Thus Charles's </span>law<span> states that at a </span>constant pressure<span>, the </span>volume of<span> a given mass </span>of gas<span> is directly proportional to its (absolute)</span>temperature<span>.</span>
Answer:
An open system is :-
B. A system that allows energy and mass to move in and out of it.
Example :-
Water boiling in a pot on a stove. (Without lid).
A compound was found to be soluble in water. It was also found that addition of acid to an aqueous solution of this compound resulted in the formation of carbon dioxide. Which one of the following cations would form a precipitate when added to an aqueous solution of this compound?
Options
a. NH4
b. K
c. Cr
d. Rb
e. Na
Answer: c: Cr
Explanation:
The aforementioned reaction are banters for to distract ones focus from the question.
However it should be noted that
Cr can be found in tannery waste water showing that it can be soluble in water.
The carbonate compound when reacting with acid CO_2 evolves.
Focusing on the cation that would form a precipitate when added to an aqueous solution.
Chemical precipitation method is a common method for to remove chromium and to recover it from tannery wastewater.
Cr would form a precipitate.
Yes, because the balloon with air has a greater density than the empty balloon.Because there is a higher density in one balloon then the weight of the balloon will change
The number of millimoles of solute per liter of water is used to express the osmotic concentration of a solution, also known as Molarity.
What is Molarity?
It is a measure of the concentration of a chemical species, in particular of a solute in a solution. In terms of the number, it is a substance per unit volume of solution. In chemistry, the most commonly used unit for the term molarity is the number of moles per liter.
To know more about Molarity go to the given link :
brainly.com/question/14514656
