When you add 0.295 g of sodium metal to an excess of hydrochloric acid, you find that 3070 j of heat are produced. what is the enthalpy of the reaction as written below?

The energy a molecule contains due to its constant random motion is known as

The energy level necessary to enable a reaction to a cure is called the activation true or false

Halogens A. Group 1 elements B. elements that make up the f - block C. elements of the s and p-blocks D. Group 17 elements E. entire set of d-block elements

What is the formal charge of hydrogen in water

What is an isotope and what is atomic structure?

What mechanical waves needs a medium to travel through? A. all mechanical waves need a medium to travel through B. surface waves only C. transverse and longitudinal waves only D. longitudinal and surface waves only

Which of the following statements correctly describes how Moseley's research affected the development of the periodic table? Moseley's research led to the reorganization of the elements based on their atomic mass instead of their physical appearance.

A minerals luster is produced by its ability to transmit light. Opaque minerals always have a metallic luster because they do not transmit any light. True False

The elements selenium and oxygen are both poor electrical conductors in which section of the periodic table are they found

What is the mole ratio of NaOH to Al (OH) 3