Problem: What is the kinetic energy of a 0.500 kg rabbit, running at 8.00 m/s? Calculate using the formula,
1 answer:
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Hello Mate!
Well, there are many definitions and descriptions of isolated systems, and here are some of them:
1. It can be a physical system which is located very very far from all other systems, so there is absolutely no interaction between them, thus making it isolated.
2. It can be a thermodynamic system with rigid walls, which prevents mass and energy to pass through.
I Hope my answer has come to your Help. Thank you for posting your question here in
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Well, there are many definitions and descriptions of isolated systems, and here are some of them:
1. It can be a physical system which is located very very far from all other systems, so there is absolutely no interaction between them, thus making it isolated.
2. It can be a thermodynamic system with rigid walls, which prevents mass and energy to pass through.
I Hope my answer has come to your Help. Thank you for posting your question here in
Answer:
Explanation:
Diethyl malonate is more acidic than monocarbonyl compounds (pKa=13) due to their alpha hydrogens being attached to two carbonyl groups. Thus, the <u>malonic ester is easily converted to its enolate ion by reaction with sodium ethoxide in ethanol</u>. The product of the alkylation of the malonic ester leaves a <u>hydrogen atom acid in an alpha position</u>, so the alkylation process can be repeated a second time to produce a dialkylated malonic ester.
In this case, when urea is treated with diethyl malonate in the presence of sodium ethoxide base,<u> the second alkylation step occurs intramolecularly</u> to generate a cyclic product, barbituric acid.
