Hydrocarbons are organic compounds that are made up of only carbon and hydrogen atoms. A hydrocarbon was found to contain 84.63% of carbon by mass. Determine the empirical and the molecular formula of this hydrocarbon if 0.471 g of its vapour occupies a volume of 268 cm3 at 18 °C and 101 kPa

How many moles are in 7.2 x 10^23 carbon molecules? (*round to the nearest hundredth and include the unit "mol c" after your number) question 6 options:

How many moles of al3+ ions are in 1.25 moles of al2o3

Consider the following reaction at equilibrium. 2co2 (g) 2co (g) + o2 (g) h° = -514 kj le châtelier's principle predicts that the equilibrium partial pressure of co (g) can be maximized by carrying out the reaction a. at high temperature and high pressure b. at high temperature and low pressure c. at low temperature and low pressure d. at low temperature and high pressure e. in the presence of solid carbon