Moles of PF₃ : 4
<h3>Further explanation</h3>
A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.
Reaction

1.25 moles of P₄(s) is reacted with 6 moles of F₂(g)
Limiting reactant : the smallest ratio (mol divide by coefficient)
P₄ : F₂ =

mol PF₃ based on mol of limiting reactant(F₂), so mol PF₃ :

A variable is not consistent or having a fixed pattern; liable to change.
Answer:
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Exothermic reactions transfer energy to the surrounding, usually as heat.
Mater means mom
The mater has kept the house in London
If you meant matter
There is not a lot of matter in an apple compared to the matter in a person.