According to the big bang theory how did the universe begin? what evidence supports this theory?

An example of technology is the a. addition of a side group to an organic molecule during synthesis. b. use of a new antibiotic to fight an infection. c. measurement of iron concentration in a water sample. d. study of atomic fusion reactions

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

What is the percentage composition of carbon in the compound ch4