Potions & Poisons B

[dvegadvol]

1. After ingestion, 2-propanol is metabolized into _______________ by the ____________.
2. Name the bond responsible for the crystal structure of ice that makes it less dense.
3. T or F: Cooking or drying out Galerina marginata makes them safe to eat.

[jxxu20]

Answer (Click to Show Hidden Text)

1. Formaldehyde, liver
2. Hydrogen bonds
3. False

[dvegadvol]

2 and 3 are correct.

The main metabolite of isopropyl alcohol (2-propanol) is acetone.

[jxxu20]

Thanks for letting me know! I guess I'll go (enjoy the questions lol):

1. What does the "N" stand for in the mnemonic "NOTRECLUSE"? What is the purpose of this mnemonic?
2. Name the types of calcium supplements and the two types that are most commonly used.
3. NOEL and NOAEL are both measures of toxicity. What is the difference between these two measures?
4. Prior to Bunsen burners, what was the primary method of fuel for chemistry heating units, and what is this substance's chemical formula?
5. What species is A. piscivorus commonly mistaken for, and how does one identify which is which between the two?

Now ... chemistry (have fun w/stoich) problems!
1. A solution of cadmium phosphate is mixed with a solution of ammonium sulfide. What is the precipitate that will be formed in this chemical reaction? (hehehehehe)
2. Silicon nitride (Si3N4) is made by a combining Si and nitrogen gas (N2) at a high temperature. How much (in g) Si is needed to react with an excess of nitrogen gas to prepare 125 g of silicon nitride if the percent yield of the reaction is 95.0%?.
3. Consider the chemical equation for cellular respiration. What mass -- in grams -- of carbon dioxide forms in the reaction of 25 grams of glucose and 40 grams of oxygen?

[space-egg]

1. What does the "N" stand for in the mnemonic "NOTRECLUSE"? What is the purpose of this mnemonic? Numerous. 2. Name the types of calcium supplements and the two types that are most commonly used. Calcium carbonate (OTC), and Calcium citrate 3. NOEL and NOAEL are both measures of toxicity. What is the difference between these two measures? No-observed-adverse-effect level (NOAEL): The amount of the substance doesn't affect the organism badly. No-observed-effect level (NOEL): The amount of the substance doesn't affect the organism at all. 4. Prior to Bunsen burners, what was the primary method of fuel for chemistry heating units, and what is this substance's chemical formula? I don't know this one 5. What species is A. piscivorus commonly mistaken for, and how does one identify which is which between the two? The cottonmouth snake is often mistaken for the Northern Water Snake. The difference between them is that the cottonmouth only has one row of scales after the anal plate

[jxxu20]

Great job! Everything looks good, and #4 is rubbing alcohol, which is C3H8O. Also, for #5, cottonmouths can be mistaken for copperheads, and the difference is that copperheads have a "hershey kiss" scale pattern whereas cottonmouths do not.

Your turn, and anyone can take a shot at my chem problems just for the fun of it !

[starfruit]

1.) Cadmium sulfide???

[jxxu20]

Yup!

[coopsadoodles]

3. Consider the chemical equation for cellular respiration. What mass -- in grams -- of carbon dioxide forms in the reaction of 25 grams of glucose and 40 grams of oxygen?
36.7g of CO2

[Froggie]

2. 125 g/0.95 = 131.6 g? It’s probably not this simple...