15 A piece of metal weighing 59.047 g was heated to 100.0 °C and then put it into 110grams of
water (initially at 22.8 °C). The metal and water were allowed to come to an equilibrium
temperature, determined to be 27.8 °C. Assuming no heat lost to the environment, calculate
the
specific heat of the metal. Use Q= -Q *
(6 Points)
.49)/(g•°C)
.32J/(g•°C)
.21J/(g•°C)
O .67J/(g•°C)

answer is: c. the experiment shows that the red substance experienced a chemical change.

this is chemical change (chemical reaction), because two new substances are formed (metalig liquid and gas), the atoms are rearranged and the reaction is followed by an energy change.

this is example of chemical decomposition.

chemical decomposition (analysis) is the separation of a single chemical compound into its two or more elemental parts or to simpler compounds.  

chemical decomposition is opposite of chemical synthesis.

"the periodic table is arranged in order of atomic number."

b is the correct answer

mark me brainliest and hope this

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.