Answer: 35.4 g
Explanation:
The balanced reaction is :
To calculate the moles :
According to stoichiometry :
2 moles of phosphorous chloride are produced by = 3 moles of 
Thus 0.37 moles of phosphorous chloride are produced by=
of
Mass of 
Thus 35.4 g of chlorine reacted with the phosphorus
Answer: e. All voltaic (galvanic) cells involve the use of electricity to initiate nonspontaneous chemical reactions.
Explanation:
Electrochemical cell or galvanic cell or voltaic cell is a cell which converts chemical energy to electrical energy.
There are two electrodes in an electrochemical cell , where one is called as anode and one is called as cathode.
At cathode reduction takes place and at anode oxidation takes place.Thus the electrons generated at anode travel towards cathode and flow of electrons lead to generation of electricity.
Thus chemical reactions lead to generation of electricity.
Thus the statement that all voltaic cells involve the use of electricity to initiate nonspontaneous chemical reactions is false.
(Answer) 0.166 moles of copper (I) nitride are needed.
Mass of copper (I) oxide = 35.7 g
Moles of copper (I) oxide formed by the reaction = (Mass / molar mass)
= ( 35.7 g / 143.09 g/mol ) = 0.25 moles
According to the balanced chemical equation,
mole ratio of copper (I) nitride and copper (I) oxide = 2: 3
Therefore, moles of copper (I) nitride needed to form 0.25 moles of copper (I) oxide = (2/3 x 0.25) moles = 0.166 moles.
Thus, 0.166 moles of copper (I) nitride are needed to form 0.25 moles of copper (I) oxide.
