![kandikisses5594](/avatars/22194.jpg)
kandikisses5594
13.01.2020 •
Chemistry
What is the molarity of a hcl solution that contains 8.53 g of hcl in 372 ml of solution?
Solved
Show answers
More tips
- C Computers and Internet Best Antivirus: How to Choose Protection for Your Computer?...
- L Legal consultation What Documents Are Required for a Russian Passport?...
- S Sport How to Choose Tennis Rackets?...
- H Health and Medicine AKDS Vaccination: Ensure Your Child s Safety...
- H Health and Medicine Naskol ko Opasen Ukus Kleshcha i Kak Ego Raspoznat...
- C Computers and Internet How to Delete Your Account on Odnoklassniki...
- H Health and Medicine What to Do When Your Jaw Locks Up?...
- G Goods and services What Are the Most Popular Services?...
- P Philosophy How did the concept of module arise in computer science?...
Answers on questions: Chemistry
- A Arts HELP PLEASE Trying to learn how to do this I can t figure it out for my students anyone knows (LOL) sorry if it is blurry...
- M Mathematics Can you construct one, many, or no triangle(s) with side lengths of 3 inches, 4 inches, and 8 inches. Explain why...
- B Business An investment of $5000 in Biotech common stock proved to be very profitable. At the end of 5 years the stock was sold for $25,000. What was the rate of return on...
- S SAT A series circuit contains a generator two devices and connecting wires....
Ответ:
M = 0.629 M
Explanation:
To calculate the molarity of any solution, you need to use the following expression:
M = n/V (1)
Where:
M: Molarity or concentration of solution (mol/L or M)
n: moles of solute (moles)
V: Volume of solution (In Liters)
But in order to use the above expression, we need to calculate the moles of the HCl, which is calculate with the following expression:
n = m/MM (2)
Where:
m: mass of the HCl (g)
MM: molar mass of HCl (g/mol)
The reported molar mass of HCl is 36.46 g/mol.
Calculating first the moles, using (2) we have:
n = 8.53 / 36.46 = 0.234 moles
Now that we have the moles, we can calculate the molarity, but first we need to pass the volume from mL to Liter:
V = 372 / 1000 = 0.372 L
Finally, let's calculate the molarity using (1) and the value of the obtained moles:
M = 0.234 / 0.372
M = 0.629 M
And this is the molarity of the HCl solution
Ответ:
B and D
Explanation:
If we use the info given we have a band a 3300 cm-1 and 2200 cm-1 this indicates that we have an alkyne functional group. Additionally, the hydrogenation of the unknown molecule will consume two moles of hydrogens this fits with the 2 pi bonds in the alkyne functional group. So, we can discard "a" and "e". The product of this hydrogenation is 2-methylhexane therefore we can discard c because the methyl group is placed on carbon 3. Structures b and d can work.
See figure 1
I hope it helps!