Look at the photo. the test tube on the left show a cooper coul placed in a solution of zinc

Asingle atom of an element has 21 neutrons, 20 electrons, and 20 protons. which element is it? ok o z

What type of chemical bond is formed between two atoms of bromine 1. metallic 2. hydrogen 3. ionic 4. covalent

What is the temperature in kelvin of a gas if it is allowed to expand from 1.50 l to 4.50 l? the initial temperature is 10.0°c and pressure is constant throughout the change. which equation should you use? t2= v2/v1 t1 what is the final temperature? ⇒ 849 k these are the answers.