Sodium reacts with water to form a colorless solution of sodium hydroxide and hydrogen gas.
In order of relative atomic mass.
Each column is called a group<span>. The elements in each </span>group have<span> the same number of electrons in the outer orbital. Those outer electrons are also called valence electrons.</span>
Answer:
for what I can see in the picture the volume is 155
Explanation:
To do this problem it is necessary to take into account that the heat given by the unknown substance is equal to the heat absorbed by the water, but considering the correct sign:

Clearing the specific heat of the unknown substance:
