The enthalpy of combustion of CH3CH2CH2CH2CH3 (M. W. = 72.15 g/mol) is 3509.0 kJ/mol. If 7.5 kg of this fuel are burned in sufficient O2, what amount of heat is released?

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

Which statement best describes the liquid state of matter? a. it has definite shape but indefinite volume. b. it has definite shape and definite volume. c. it has indefinite shape and indefinite volume. d. it has indefinite shape but definite volume.

What is a for cio3-, the chlorate ion?