The table shows the number of atoms of different elements that make up molecules of four compounds. Which compound has the chemical formula C₄H₄N₂O₂

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?

Estimate the molar mass of the gas that effuses at 1.6 times the effusion rate of carbon dioxide.

What two factors can affect the properties of a hydrocarbon? a. the number of its carbon atoms and the number of single bonds b. the number of its carbon atoms and the arrangement of its atoms c. the arrangement of its atoms and the number of its double bonds