The binding energy of electrons in a metal is 193 kJ/mol. Determine the threshold frequency for this metal.
1 answer:
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<u>Answer:</u> The products of the reaction will be
<u>Explanation:</u>
Single displacement reaction is defined as the reaction in which more reactive element displaces a less reactive element from its chemical reaction.
The general chemical equation for the single displacement reaction follows:
The given chemical equation follows:
Bromine element is more reactive than iodine element. Thus, can easily replace iodine from its chemical reaction.
Hence, the products of the reaction will be
Answer:
a. 342.9 kJ of heat are absorbed.
Explanation:
Calculation of the moles of as:-
Mass = 20.00 g
Molar mass of = 17.031 g/mol
The formula for the calculation of moles is shown below:
Thus,
Given that:-
It means that 1 mole of undergoes reaction and absorbs 1168\ kJ of heat
So,
1168 mole of undergoes reaction and absorbs
of heat
<u>Amount of heat absorbed = + 342.9 KJ</u>