Bromine, B2. Hope this helps! ♥
Answer:
The pH of the solution is 1.66
Explanation:
Step 1: Data given
Number of moles HCl = 0.022 moles
Molar mass of HCl = 36.46 g/mol
Step 2: Calculate molarity of HCl
Molarity HCl = moles HCl / volume
Molarity HCl = 0.022 moles / 1 L = 0.022 M
[HCl] = [H+] = 0.022 M
Step 3: Calculate pH
pH = -log [H+]
pH = -log(0.022)
pH = 1.66
The pH of the solution is 1.66
Answer:
The scaling factor is 5.
Explanation:
Hello there!
In this case, since the scaling factor is defined as the ratio of the molar mass of the molecular formula (complete) to the empirical formula (simplified), it is possible to compute it for the empirical formula of CH2O whose molar mass is 30 g/mol (12+2+16) as shown below:
Therefore, we can also infer that the molecular formula would be:
Best regards!
The dilution of hydrogen peroxide that would not be considered an effective disinfectant is any solution with a Hydrogen peroxide concentration that is lower to 3%.
<h3>What is hydrogen peroxide?</h3>
Hydrogen peroxide is one of the most common antiseptics. This means it is a substance used as a disinfectant either on surfaces or in small wounds, although its use on wounds is discouraged.
<h3>What concentration works as a disinfectant?</h3>
In most cases, hydrogen peroxide is not found as a pure substance but as a dilution, which means hydrogen peroxide is mixed with other substances such as water to decrease its concentration.
The ideal concentration of hydrogen peroxide is 3%, this concentration makes it an effective disinfectant. In the same way, a lower concentration would not have effectiveness in terms of disinfection.
Learn more about peroxide in: brainly.com/question/1446111
To work this out you do 400÷20=20