The analysis of a hydrocarbon revealed that it was 85.6281% C and 14.3719% H by mass. When 1.69 g of the gas was stored in a 1.1 L flask at −47.8551◦C, it exerted a pressure of 513 Torr. What is the molecular formula of the hydrocarbon?

This graph gives information on changes in sea ice extent in the arctic ocean over a 30-year span. the overall trend shows in the ice extent. to address the trend, scientists need to ask themselves, one direct consequence of the trend is that

Which of the following happens during cell division? (a) energy is created (b) waste is eliminated (c) carbon dioxide is released (d) damaged cells are replaced

How much energy is made when a pice of wood burns. how do you know