The first one is D hope it helps!
B
Explanation:
Burning is a chemical change and cutting grass is a physical change
Answer
False
Explanation
Specific heat is the amount of heat per unit mass required to rise the temperature of a substance by one degree celsius.It is expressed in units of thermal energy per degree temperature.A calorimeter is used when measuring the heat capacity of a reaction.Molar heat capacity is amount of heat required to raise the temperature of a substance by one degree Celsius.
Answer:
the answer is C + H2O # CO + H2.
