Answer:
false
Explanation:
first of all;-energy lead to an indotermic reaction.
indotermic is a reaction that absorbs energy \
*it has positive enthalpy of reaction
*Heat content of product is greater than that of reactant
*Heat is added to reactant side
example;- CO^2+2H^2+891kj --------- CH4 +2O2
The answer is C, because if the copper has a +2 charge, the fluoride must have a -2 charge in order to cancel out.
3 elements are in one chemical
We know,
PV=nRT
203*20= n*0.0821*373
n=132.5 moles.