Answers

ZK

Answered

In the hydrocarbon shown below, how many tertiary hydrogens are present? In the hydrocarbon shown below, how many tertiary hydrogens are present?   A)  0 B)  1 C)  2 D)  3 E)  4

A) 0
B) 1
C) 2
D) 3
E) 4

On Aug 04, 2024


D
ZK

Answered

How many distinct monochlorinated products can result when cyclopentane is subjected to free radical chlorination?

A) 1
B) 2
C) 3
D) 4
E) 5

On Aug 01, 2024


A
ZK

Answered

Which of the following will result in removal of a benzyl ester protecting group?

A) acid hydrolysis only
B) decarbonylation only
C) catalytic hydrogenation only
D) both acid hydrolysis and decarbonylation
E) both catalytic hydrogenation and acid hydrolysis

On Jul 18, 2024


E
ZK

Answered

What is the source material for most polymers?

A) Biodegradable plant matter
B) Petroleum
C) Plastics
D) Clothing, shopping bags, and disposable packaging

On Jun 18, 2024


B
ZK

Answered

When 1,1,3,3-tetramethylcyclobutane is brominated at 125°C, the relative reactivity of the 1°: 2°: 3° hydrogens is approximately 1:82:1600. Estimate the amount of each monobromination product.

On Jun 15, 2024


primary bromide, 3.5%; secondary bromide, 96.5%
ZK

Answered

In an equilibrium whose reaction is expressed HAc ⇌ H+ + Ac- , how can K equal a number greater than 1000 if the product concentrations are never greater than 0.2 M each?

A) The product concentrations must be halved.
B) The reactant concentration must be as small as 4.0 × 10-5.
C) The reactant concentrations must be made as large as 5.0 × 105.
D) The product concentrations must be very close to zero.

On Jun 09, 2024


B
ZK

Answered

What typically happens to non-metal free elements (like oxygen or nitrogen) when they react in a redox reaction?

A) They are oxidized.
B) They are reduced.
C) They are neither oxidized nor reduced.
D) They combust.

On Jun 05, 2024


B
ZK

Answered

What animal sources besides sheep wool are used in fiber and textile production?

On May 16, 2024


Camel hair, alpaca, mohair, cashmere, silk, and angora
ZK

Answered

Why are pooling marks near furniture not good evidence of an arson?

On May 14, 2024


Because foam from furniture also makes such pools
ZK

Answered

The alkane solvents are quite soluble in water.

On May 12, 2024


False