What is the total number of moles present in 256.0g sample nahco3(s)

What’s the scientific notation for the number 6,840,000,000

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?

Many pharmaceutical drugs are organic compounds that were originally synthesized in the laboratory. which two scientific disciplines are bridged by pharmaceutical drugs? chemistry and forensics chemistry and medicine biology and forensics biology and criminology