Problem 1: . the melting points of canola oil, corn oil, sunflower oil, and peanut oil are 10°c, –11°c, –17°c, and –2°c. based on this information, how might you separate one type of oil from the rest in a mixture of all four? . a. cooling in a freezer. b. liquid chromatography. c. simple distillation. d. paper chromatography

            One type of Oil (canola oil) can be separated from the mixture by Cooling in a Freezer.

The data given is as;

     Oil                                             Melting Point / Freezing Point

Canola Oil                                                             10 °C

Corn Oil                                                                -11 °C

Sunflower Oil                                                       -17 °C

Peanut Oil                                                            -2 °C

When the mixture of these oils is cooled to 5 °C only the Canola oil will solidify because it has a melting point of 10 °C and exists in solid state below 10 °C (Freezing Point). Therefore, it can easily be separated from remaining mixture which is present in liquid state.

While, simple distillation is not possible because Oils have Smoke point instead of boiling point as at that high temperature oils tend to produce smoke and burns hence, it is not the efficient method.

in theory, limestone is composed principally of the compound calcium carbonate - caco3, but in reality this compound is deposited in conditions involving a number of other compounds as impurities so it ends up being a mixture of many compounds.

hope this : -)

tony (lordcaos066)

d. temperate deciduous forest