For which of the following reactions is ΔH∘rxn equal to ΔH∘f of the product(s)?You do not need to look up any values to answer this question 1. C(s, graphite)+O2(g)→CO2(g) 2. CaCO3(g)→CaO+CO2(g) 3. Li(s)+12Cl2(l)→LiCl(s) 4. Li(s)+12Cl2(g)→LiCl(s) 5. 2Li(s)+Cl2(g)→2LiCl(s) 6. CO(g)+12O2(g)→CO2(g)

What is the theoretical yield of carbon dioxide? a)0.993 gb)2.98 gc)3.65 gd)8.93 g

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

Acamcorder has a power rating of 17 watts. if the output voltage from its battery is 7 volts, what current does it use?units: