Which one of the following statements about mixtures is ments about mixtures is correct 11 [2] the different substances in a mixture are alwa a mixture is made up of elem stances in a mixture are always in a definite proportion to each other. made up of elements that are chemically combined alt to separate a mixture into different substances te is extremely difficult to separate a mixture into di uust contain at least two different substances [4] 15] a mixture must contain at least two a mixture is always homogeneous. which of the following is a heterogeneous mixture? [3] cola brass air coffee with sugar stirred in soil [57 5.2 cm of a metal is found to weigh 46.6 g on a three decimal balance. what is th metal, expressed to the proper number of significant figures? 11] 9 g/cm [2] 9.0 g/cm [3] 8.96 g/cm [4] 0.11 g/cm [5] 0.112 g/cm (4) how many protons, neutrons, and electrons are there in [1] [2] [3] protons=33, protons=42, protons=75, protons=45, protons=33, neutrons=42, neutrons=44, neutrons=75, neutrons=75. neutrons=42, electrons=33 electrons=30 electrons=34 electrons=30 electrons=36