_____________ are designed to make it easier for employees to get health and safety information about chemicals.

Engineering

2 answers:

geniusboy [140]3 years ago

7 0

The Occupational Safety and Health Administration's (OSHA) Hazard Communication Standard (HCS) I think

hodyreva [135]3 years ago

4 0

Answer:

Hazard Communication Standard

Explanation:

The Hazard Communication Standard conceptualized by the Occupational Safety and Health Administration of United States Labor Department, provides an useful information for the workers and employees working in a chemical industry or dealing with chemicals about the chemicals that they are using and handling.

One of the main reason and concept behind Hazard Communication Standard is that the workers have the right to know the danger or the hazards of the chemical that they are working with.

Thus the answer is "Hazard Communication Standard".

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Propyl Benzhydryl Ether (continued on next page):

uranmaximum [27]

Answer:

See detailed explanation and image attached

Explanation:

1 mole of 1-pentanol reacts with 1 mole of benzhydrol

Number of moles in 1.5 g of benzhydrol = mass/molar mass = 1.5 g/184 g/mol = 0.008 moles of benzhydrol

x moles of 1-pentanol reacts with 0.008 moles of benzhydrol

x = 0.008 moles of 1-pentanol

If 1 mole occupies 22.4 L

0.008 moles occupies 22.4 * 0.008 moles = 0.179 L of 1-pentanol is required.

The mechanism of the formation of n-pentyl benzhydryl ether involves the protonation of the -OH group in benzhydrol. This is followed by loss of water molecule creating a carbocation which is attacked by the 1-pentanol. Abstraction of a proton by a base completes the mechanism, regenerates the acid and yields the n-pentyl benzhydryl ether as shown in the image attached.

The synthesis of diethyl ether occurs by protonation of one ethanol molecule followed by SN2 attack by anothe ethanol molecule and a simultaneous loss of a water molecule. Deprotonation by a base yields the diethyl ether