The temperature in the stratosphere is −24°c. calculate the root-mean-square speeds of n2, o2, and o3 molecules in this region.

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A hardware salesman measures the mass of a box containing

lorasvet [2795]

Step $1$ : To find the mass of a single washer, divide the total measured mass by the number of washers $\frac{0.4168}{1000} =0.0004168\ Kg$ $0.0004168kg=4.168*10^{-4} kg$ . Step $2$ : Convert kilograms to milligrams knowing $1 kg=1*10^{6} mg$ ; thus $4.168*10^{-4}*10^{6} =4.168*10^{2}mg=416.8 mg$ resulting in the final answer $416.8 mg$ .

8 0

4 months ago

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What acid chloride would be needed to prepare the following ketone from benzene using a Friedel-Crafts acylation? Click the "dra

alisha [2963]

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.

3 0

3 months ago