For KNO₃, the mass is 346g. The molar mass can be computed as (39.098) + (14) + (15.99*3), which results in 101.068 gmol⁻¹. The volume of the solution is given as 750ml, equivalent to 0.75dm³. The formula for molarity is (mass of solute/molar mass of solute)*(1/volume of solution in dm³). Accordingly, molarity = (346/101.068)*(1/0.75), yielding 4.56 mol dm⁻³.
Answer:
Explanation:
a) Iron has the tendency to undergo rusting -- this is a chemical property as it involves a reaction with water and air.
b) Precipitation in industrialized areas often has an acidic nature -- this is also a chemical property due to its interaction with bases or metals.
c) Hemoglobin is red in color -- this is a physical property since it doesn't entail any chemical reactions.
d) When water is left out in sunlight, it evaporates gradually -- this is a physical property because the process can easily be reversed, classifying it as a physical change.
e) During photosynthesis, plants convert carbon dioxide into more complex molecules -- this demonstrates a chemical property since it involves chemical reactions.
Answer:
Benzoyl Chloride
Explanation:
Friedel-Craft Acylation is a reaction used to incorporate electrophiles (especially carbonyl groups) into the double bonds of aromatic compounds.
This scenario involves synthesizing benzophenone using benzene and benzoyl chloride.
Mechanism:
Step 1: Initially, benzoyl chloride reacts with a Lewis acid to create an electrophile known as oxo(phenyl)methylium.
Step 2: The second stage involves benzene participating in an electrophilic substitution reaction, where the electrophile is added.
Step 3: Finally, the aromatic nature of benzene is restored by releasing a proton.
Co2 is indeed the correct answer, my friend.
At standard conditions of 1 atm and 273 K, the specific volume for any ideal gas is set at 22.4 L/mol. Therefore, the moles of SO₂ can be calculated as 5.9 L multiplied by 1 mol/22.4 L, equating to 0.263 mol. The molar mass of SO₂ is 64.066 g/mol, leading to a mass of 0.263 mol multiplied by 64.066 g/mol, resulting in 16.87 g of SO₂.
