A sample of helium gas occupies 12.4 Liter at 23°C and 0.956 atm. What volume will it occupy at 40°C and 0.956 atm?*
11.7L
13.1 L
7.13 L
21.6 L

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?

What effect would average population growth have on land usage? a. urban use of land would rise to more than 30 percent of available land. b. industrial use of land would rise to more than 30 percent of available land. c. the percentage of available land used as cropland would stay the same. d. cropland would fall to about 10 percent of available land.