Choice c - eats away other materials
This is false. The amount of electrons in lithium (Li) is not 7, it is 3. There are 3 electrons in lithium.
DescriptionA chemical property is any of a material's properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance's chemical identity.
Answer:
Q = -897 kJ/mol
Explanation:
From the given information:
The heat released Q = -65.9 kJ
To start with the molar mass of
= 2 × (molar mass of H) + 2 × (molar mass of O)
= (2 × 1.008) + (2 × 16.0 )
= 34.016 g/mol
However, given that:
mass of
2.50 g
The number of moles of
= 


Finally; Using the formula:

Q = -897 kJ/mol