Answers

EG

Answered

Which of the halogens below undergoes free radical halogenation with ethane most rapidly?

A) fluorine
B) chlorine
C) iodine
D) bromine
E) pyridine

On Aug 03, 2024


A
EG

Answered

When 24 g of methane gas (CH4) is combined with 16 g of oxygen gas, if 15 g of water is collected and the only other product is carbon dioxide, how much carbon dioxide must have been released?

A) 30 g
B) 2.0 g
C) 40 g
D) 15 g

On Jul 14, 2024


A
EG

Answered

What is the shape of the ammonia molecule, NH3?

On Jul 11, 2024


Trigonal pyramidal
EG

Answered

Which of the following species is attacked by benzene in the electrophilic nitration reaction?

A) HNO3
B) NO2+
C) NO2
D) NO+
E) N3-

On Jun 13, 2024


B
EG

Answered

How many times less soluble in water is oxygen than hydrogen?

A) Four times
B) Two times
C) Their solubility is about the same.
D) None of the above; oxygen is actually more soluble than hydrogen in water.

On Jun 09, 2024


D
EG

Answered

Some ethers can be prepared by heating the appropriate alcohol in the presence of sulfuric acid. Can di-sec-butyl ether be prepared from sec-butanol by this route? Explain your answer.

On Jun 01, 2024


No. sec-Butanol is a secondary alcohol. Secondary and tertiary alcohols predominantly undergo elimination when heated in acid.
EG

Answered

The amino acid sequence Gly-His-Arg-Lys-Pro-Pro-Ala is made from what codon sequence?

A) GGCCACCGCTTTCCCCCCGCC
B) CGCCACCGCAAACCCCCCGCC
C) GGCCACCGCAAACCCCCCGCC
D) GGCCACCGCAAACCCCCCGCG

On May 15, 2024


C
EG

Answered

What is a low explosive?

On May 14, 2024


A compound that must be confined in a container.
EG

Answered

Provide the reagents that would complete the synthesis shown below. Provide the reagents that would complete the synthesis shown below.

On May 12, 2024


1. NaBH4 or LiAlH4
2. PhCH2Br
EG

Answered

The name 2-butylpropane is incorrect for a branched alkane, but the correct name can be deduced from it. What is it?

A) 1-methylhexane
B) 1-methypentane
C) 2-methylhexane
D) 2-pentylmethane

On May 03, 2024


C