Which statement describes the relative masses of two different particles? a) a neutron has less mass than a positron b) a beta particle has less mass than a neutron c)

The density of a planet is 0.69 g/cm3 (density of water is 1.0 g/cm3). which of the following planets might this be? a. mercury b. venus c. saturn d. mars

Which of the following statements about hybrid orbitals is or are true? choose all that apply. choose all that apply. under sp2 hybridization, the large lobes point to the vertices of an equilateral triangle. after an atom undergoes sp hybridization there is one unhybridized p orbital on the atom. the angle between the large lobes of sp3 hybrids is 109.5∘

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?