In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a metal.

she heats 19.5 grams of tungsten to 97.80°c and then drops it into a cup containing 78.3 grams of water at 22.58°c. she measures the final temperature to be 23.20°c.

assuming that all of the heat is transferred to the water, she calculates the specific heat of tungsten to be j/g°c.

Answer : The specific heat of tungsten is,

Explanation :

In this problem we assumed that heat given by the hot body is equal to the heat taken by the cold body.

where,

= specific heat of tungsten = ?

= specific heat of water =

= mass of tungsten = 19.5 g

= mass of water = 78.5 g

= final temperature =

= initial temperature of tungsten =

= initial temperature of water =

Now put all the given values in the above formula, we get

Therefore, the specific heat of tungsten is,

hey there!

mass = 6.75 g

volume =   9 cm³

therefore:

d = mass / volume

d   = 6.75 / 9

d = 0.7 g/cm³

answer b