Ask a New Question

Questions and answers by

Sheryl

Questions (131)

We're doing a TLC analysis of analgesic drugs. One of my prelab questions is:Name some advantages of using acetaminphen
1. 0 answers
2. 1,337 views
Does anyone know what kindo of chemistry lab course(Organic, Physical, etc.) might use a soxhlet extractor in the experiments?Sh
1. 0 answers
2. 669 views
Extraction procedure and equations:Thought I'd better post this on the current page. I need the reaction equations checked. I
1. 0 answers
2. 676 views
We did an extraction. A solid including benzoid acid, p-nitroaniline, and napthalene was dissolved in dichloromethane. HCl was
1. 1 answer
2. 3,864 views
Regarding extraction, the heading is: Descripton of method. Principle of operation.My description is: Extraction is based on the
1. 0 answers
2. 506 views
I'm to describe uses of method. My answer is short. Is it sufficient?Extraction is used to separate one or more components from
1. 0 answers
2. 405 views
a four-component mixture was extracted. In the mixture was R-phenol, RCOOH, RNH2 and R-(C=O)-R in solution with ether and
1. 1 answer
2. 698 views
How many grams are there in an ounce?Thanks from Sheryl There are 453.592 grams in a pound so divide that by 16 to get 1 oz =
1. 0 answers
2. 617 views
My teacher last year in General Chemistry was really great. She was highly organized, always prepared for class, approachable
1. 0 answers
2. 729 views
The problem: Write an equation to show how you could recover the parent compounds from their respective salts shown in Figure
1. 1 answer
2. 2,396 views
Question: An unknown compound gave a melting point of 230C. When the molten liquid solidified, the melting point was
1. 1 answer
2. 4,147 views
Question: A compound melting at 134 degrees C was suspected to be either aspirin (mp 135C) or urea (mp 133C) Explain how you
1. 1 answer
2. 4,323 views
Question: Two substances, A and B, have the same melting point. how can you determine if they are the same without using any
1. 1 answer
2. 9,427 views
From part of an earlier question:My question: D. What filtration device would you use to isolate 2.0 g of crystals from about 50
1. 0 answers
2. 692 views
Do you have any idea what the melting points and range might be for a 50/50 mixture of:1. Benzoin (M.P.: 135-136) and
1. 0 answers
2. 632 views
Problem: In each of the following situations, what type of filtration device would you use?A. Remove powdered decolorizing
1. 0 answers
2. 2,087 views
Question: A student dissolved 0.30 g of a crude product in 10.5mL (the minimum amount required) ethanol at 25 degrees C. He
1. 0 answers
2. 1,411 views
I won't try to draw one here but take for example, CH3CH2COO-. This has two resonance structures but they look the same to me.
1. 0 answers
2. 984 views
A strong acid readily donates a proton. Inductive effects and other factors can stabilize the negative charge of the conjugate
1. 0 answers
2. 1,145 views
Is there a good tutorial on inductive effects, especially as they relate to acids and bases as taught in Organic Chemistry? My
1. 0 answers
2. 431 views
Question: A student dissolved 0.30 g of a crude product in 10.5mL (the minimum amount required) of ethanol at 25 degrees C. He
1. 0 answers
2. 893 views
Question: While performing a crystallization, you obtain a light tan solution after dissolving your crude product in hot
1. 1 answer
2. 1,555 views
Question: A compound you have prepared is reported in the literature to have a pale yellow color. When the substance is
1. 0 answers
2. 1,915 views
Question: What would happen if a hot saturated solution were filtered by vacuum filtration using a Buchner funnel? Hint: Cooling
1. 1 answer
2. 3,119 views
The question is: A student performs a crystallization on an impure sample of biphenyl. The sample weighs 0.5g and contains about
1. 2 answers
2. 4,588 views
Benzyl alcohol is not a good sovent with which to crystallize fluorenol. The melting point looks okay so I'm assuming that
1. 5 answers
2. 4,359 views
Could you tell me what the melting point for a crystallized sulfanamide is? Also, we will have to determine the m.p. of an
1. 1 answer
2. 723 views
What is the best solvent for impure fluorene? The possibilities are methyl alcohol, water, and toluene. I'm betting toluene but
1. 1 answer
2. 1,130 views
We will be conducting a crystallization experiment this week. I was wondering what the most common materials used for this
1. 2 answers
2. 1,272 views
Is there a good article on how to draw resonance structures?Sheryl Sheryl, These are so hard to do on these boards. In fact, I
1. 0 answers
2. 591 views
I want to get some equipment to do my own experiments. I'd like to get a stand with a very heavy base. Any recommendations? I
1. 0 answers
2. 568 views

Pages

1
2

Ask a New Question

Archives
Contact Us
Newest
Privacy Policy
Terms of Use
© 2024