For each of the following acid-base reactions, calculate how many grams of each acid are necessary to completely react with and neutralize 2.1 g of the base. 1. HCl(aq)+NaOH(aq)→H2O(l)+NaCl(aq)
2. 2HNO3(aq)+Ca(OH)2(aq)→2H2O(l)+Ca(NO 3)2(aq)
3. H2SO4(aq)+2KOH(aq)→2H2O(l)+K2SO4(aq )

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

Explanation for basic character?