What volume of 0.255 M hydrochloric acid reacts completely with 0.400 g of sodium hydrogen carbonate, NaHCO3 (MM

What is important to study for nios grade 12 chemistry? i have only one month left.

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

Light waves are as they pass through the