Please help me with these five questions

What intermolecular forces would exist between sulfur dichloride which has the molecular formula SCl2, and bromine trifluoride which has the molecular formula BrF3 ? a. Dispersion forces only b. Dispersion forces and dipole-dipole forces only c. Dispersion forces, dipole-dipole forces and hydrogen bonding. d. Hydrogen bonding only. e. Dipole-Dipole forces only. What type of bond would exist between Br and Br ? a. No bond forms b. Non-polar covalent c. Ionic d. Polar covalent e. Metallic The partial pressure of O2 in the atmosphere at sea level is 21.3kPa. What is the partial pressure of O2 on the top of a mountain, where the atmospheric pressure is 77.7kPa ? [Atmospheric pressure at sea level is 101.3kPa.] a. 27.8kPa b. 21.3kPa c. 77.7kPa d. 16.3kPa e. 2.2kPa What of the following options describes the term "partial pressure"? a. The pressure exerted by one component of a gaseous mixture. b. The attraction between the negatively-charged electron cloud of one molecule with the positivelycharged nucleus of a neighbouring molecule due to their mutual polarizability. Also called 'London forces'. c. Amount (moles) of a constituent divided by the total amount of all constituents in the mixture. Also called the amount fraction (x). d. The ease of distortion of the electron cloud of a molecular entity by an electric field. e. A chemical bond in which two atoms share one or more pairs of electrons. Which of the following lists correctly ranks the species in order of increasing strength of intermolecular forces in a pure sample? a. CH3CH3