What distinguishes a substance from a mixture? a) samples of the same substance can have different intensive properties. b) mixtures are groupings of elements, and compounds are not. c)substances are compounds, and mixtures are not. d) mixtures can be separated physically, while compounds cannot.

Miner's coal distributors does not mine coal itself, nor does it even store or handle the coal. instead, miner's solicits orders for low sulfur coal from other firms, then purchases the required amount from suppliers and directs them to ship the coal to its customers. what is miner's

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

Which of the following represents the ester functional group? a. -coo- b. -cho c. -cooh d. c=o