Answer : The mass of the water in two significant figures is,
Explanation :
In this case the heat given by the hot body is equal to the heat taken by the cold body.
where,
= specific heat of iron metal =
= specific heat of water =
= mass of iron metal = 32.3 g
= mass of water = ?
= final temperature of mixture =
= initial temperature of iron metal =
= initial temperature of water =
Now put all the given values in the above formula, we get
Therefore, the mass of the water in two significant figures is,