Answer:
The concentration of the solution is 2.86 M
Explanation:
Molarity is a unit of concentration based on the volume of a solution. It is defined as the number of moles of solute that are dissolved in a given volume. In other words, molarity is defined as the number of moles of solute per liter of solution.
The Molarity of a solution is determined by the following expression:
Molarity is expressed in units ().
In this case, you must then know the number of moles of HF, for which you must know the molar mass. Being:
the molar mass of HF is: HF= 1 g/mole + 19 g/mole= 20 g/mole
Then the following rule of three applies: if 20 g of HF are available in 1 mole, 14.3 g in how many moles will they be?
moles= 0.715
So:
- number of moles of solute: 0.715 moles
- Volume: 250 mL=0.250 L (being 1 L=1000 mL)
Replacing:
Solving:
Molarity= 2.86 =2.86 M
<u><em>The concentration of the solution is 2.86 M</em></u>
Answer:
This is phenylacetic acid, also known as phenylethanoic acid.
Explanation:
It is a carboxylic acid so it ends in the suffix -oic. The carboxylic acid has two carbons so it is called ethanoic acid. It is attached to a phenyl group so it that makes it phenylethanoic acid. Ethanoic acid is also known as acetic acid, hence another name is phenylacetic acid. Carboxylic acids have the highest priority in IUPAC naming after cations so the parent chain is the carboxylic acid part.
Answer:
i believe the grand canyon is an example
Explanation:
The PH level of the surface of the water is 9.0
Hope this helps
Hello. You have not presented the image that presents the two elements mentioned in the question. This makes it impossible for your question to be answered. However, I will try to help you as best I can.
To say whether the compounds obey the law of multiple proportions, you should observe whether one of the elements, formed from the compounds, maintains a fixed mass, while the other element presents the mass in a varied amount of small, whole numbers, spread across the formed compounds .
This is because the law of multiple proportions states that an element must have a fixed mass when reacting with another element to create compounds. This reaction will allow this element to keep the mass fixed, while the other element will generate different compounds, where each one presents a part of the mass of the forming element, in small and whole numbers.