C. Because both reactants and products continue to form.
Explanation:
Chemical properties are those properties that tells us about what a substance can do as regards to whether or not the substance reacts with other substances.
- Chemical properties are a function of the electrons contained in an atom and how they interact with other atoms.
- Examples of chemical properties are:
- Flammability
- Rusting of iron
- Precipitation
- Decomposition of water by an electric current
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BF3 acts as a Lewis acid when it accepts the lone pair of electrons that NH3 donates.
B. Non- renewable resources are used up faster than it is made.
Answer:
The heat is 
Explanation:
From the question we are told that
The pressure is 
The boiling point is 
The heat of vaporization at 34°C is = 
The specific heat of the liquid is 
The mass is
The no of moles of the sample of
is given as

The Molar mass for
is a value = 
Substituting the value into the above equation


The heat H is mathematically as

The negative sign show that the heat is for condensing

