Inside a calorimeter is 100 g of water at 39.8 Celsius a 10 g object at 50°C is placed inside of the cup calorimeter when equilibrium has been reached the new temperature of the water in metal object is 40°C what type of metal is the object made from

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture