How many atoms are in 121 grams of calcium?

What is locatiion of 160 degrees west longitude and 65 degrees west latitude? Why is helium non-polar? What is the average price of a 2007 car in the United States? Is water chestnut a stem or a root? This ecosystem is hot and humid all year longchameleons toucans and chimpanzees all live here? What is an example of a variation that could give an individual an advantage for surviving and producing offspring? Why lipase can't produce starch? What planet has mountains valleys plains and continents like the earth but no water? What two processes are directed by viral genes that are activated inside the host cell? Is a condensation reaction an anabolic reaction? How do coelentrate move? When was the first man created by nature? Which theory explains ATP synthesis chloroplast and mitochondria? Where does blue topaz fit in the rock cycle? Name the starting materials of respiration given the summary equation? What time was Issac newton born? What plants are at the Disphotic Zone? What is the scientific word for people? Dark nipples and a dark line? Why can't you change back something that is irreversible?