The temperature inside a closed car on a sunny day is 305 K. After 50minutes, the temperature rises to 328 K. To the nearest °C, what is the newtemperature in Celsius? (number only ... no units) *

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit