Acrylonitrile c3h3n is the starting material for the production of a type of widely used plastic called acrylics. acrylonitrile can be prepared from propylene, c3h6 by reaction with ammonia and oxygen. find the percent yield of acrylonitrile if the reaction yield is 91g when 84 g of propylene and 34 g of ammonia are reacted

85.85 %

Explanation:

The formula for the calculation of moles is shown below:

Given: For propylene

Given mass = 84 g

Molar mass of propylene = 42 g/mol

Moles of propylene = 84 g / 42 g/mol = 2 moles

Given: For ammonia

Given mass = 34 g

Molar mass of ammonia = 17 g/mol

Moles of ammonia = 34 g / 17 g/mol = 2 moles

According to the given reaction:

2 moles of ammonia react with 2 moles of propylene to give 2 moles of acrylonitrile.

Thus, Moles of acrylonitrile = 2 Moles

Molar mass of acrylonitrile = 53 g/mol

Mass of acrylonitrile = Moles × Molar mass = 2 × 53 g = 106 g

Theoretical yield = 106 g

Given experimental yield = 91 g

% yield = (Experimental yield / Theoretical yield) × 100 = (91/106) × 100 = 85.85 %

its weight is greatest on earth

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance