Answer: the correct answer is Option D
Explanation:
Answer:
2Zn + 2HCl = H2 + 2ZnCl
Explanation:
Zn is a metal, when metals have reaction with strong acid it will produce H2 gas and the metal's salt which is ZnCl.
Later on you just make the equation in balance.
The moles of silver nitrate required to form 0.854 mol silver ion has been 0.854 mol.
The balanced chemical equation for the dissolution of silver nitrate has been:

The aqueous solution of silver nitrate has been dissociated into the constituent silver and nitrate ions.
In a balanced chemical equation, the coefficient has been equivalent to the moles of each reactant forming the moles of product.
From, the balanced equation,

The given moles of Silver has been 0.854 mol. Thus, the moles of silver nitrate required has been given as:

The moles of silver nitrate required to form 0.854 mol silver ion has been 0.854 mol.
For more information about the moles produced, refer to the link:
brainly.com/question/10606802
Heat travels from hot to cold in order to balance out the temperature. Thus, the heat transfer goes from the hot water to the finger.
If the water was hot enough, it would transfer too much heat, and the finger would get burned.