A sample of a compound containing only carbon and hydrogen atoms is completely combusted, producing 11.0 g of CO, and 4.5 g of H, O.
Which of the following is the empirical formula of the compound?
Choose 1 answers
CH
B
CH
CH3
C2H

List four observations that indicate that a chemical reaction may be taking place

Stage in which a typical star has completely stopped fusion

Imagine a small synthetic vesicle made from pure phospholipids enclosing an interior lumen containing 1 mm glucose and 1 mm sodium chloride. if the vesicle is placed in pure water, which of the following happens faster? a. na+ diffuses out. b. cl– diffuses out. c. h2o diffuses in. d. glucose diffuses out. e. sodium chloride diffuses out.