14. A sample containing a mixture of Oz, N2, H2 gases has a volume of 42.0 L and is held at a temperature of 301 K. If the total pressure of the sample is 104 kPa and the partial pressures of
N2 and H2 are 60.0 kPa and 28 kPa respectively, calculate the number of moles of Oz that there
are in the sample. *
Could someone answers this please :)))

Modern pennies are composed of zinc coated with copper. a student determines the mass of a penny to be 2.482 g and then makes several scratches in the copper coaling (to expose the underlying zinc). the student puts the scratched penny in hydrochloric acid, where the following reaction occurs between the zinc and the hcl (the copper remains undissolved): zn(s) + 2 hcl(aq) → h2(g) + zncl(aq)the student collects the hydrogen produced over water at 25 °c. the collected gas occupies a volume of 0.899 l at a total pressure of 79 j mmhg. calculate the percent zinc (by mass) in the penny. (assume that all the zn in the penny dissolves.)

Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?

Tell me the iupac names of the following alcohols: