What is a change in heat energy when 40 g of water at 25°C is raise to 60°C

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

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

Ais a mountain created from eruptions of lava, ash, rocks, and hot gases.