suppose 128 radioactive atoms have a half-life of 15 seconds approximately how many will be left after 30 seconds

Problem page gaseous ethane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . if of water is produced from the reaction of of ethane and of oxygen gas, calculate the percent yield of water. be sure your answer has the correct number of significant digits in it.

Which three statements represent the benefits of performing experiments using computer simulations?

What is the chemical formula for the compound formed between sodium and flour one