1. Al2O3 Al= ; O= Total # atoms= 2. Ca(OH)2 Ca= ; O= ; H= ___ Total # atoms=

3. Cu(NO3)2 Cu= ___; N= ___; O= ___ Total # atoms=

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

Compare and contrast refraction of light and sound will give brainliest

Let the ed50 of a recreational drug be defined as the amount required for 50% of a test group to feel high or get a buzz. if the ed50 value of ethanol is 470 mg/kg body mass, what dose would a 70 kg party goer need to quickly consume in order to have a 50% chance of getting a buzz? 235 mg 470 mg 32,900 mg 35,000,000 mg