Asample of nickel is heated to 99.8 degrees c and placed in a coffee cup calorimeter containing 150.0g water at 23.5 degrees c. after the metal cools, the final temperature of metal andwater mixture is 25.0 degrees c. if the specific heat capacity of nickel is 0.444j/(degreescg),
what mass of nickel was originally heated?

28.3 grams

Explanation:

As we know that,  

        .................(1)

where,

q = heat absorbed or released

= mass of water= 150.0 g

= mass of nickel = ?

= final temperature =

= temperature of water =

= temperature of nickel =

= specific heat of water =

= specific heat of nickel=

Now put all the given values in equation (1), we get

Therefore, the mass of nickel originally heated was 28.3 grams

r just means there's a number of carbon in teh chain. for example rcooh means that after x number of carbon, the chain ends with cooh.

explanation: