Which of the following has a dipole moment? [1] [2] [3] [4] [5] sf pci bf: sf4 cc14
which one of the following statements about mixtures is correct. 121 131 141 [5] the different substances in a mixture are always in a definite proportion to each other. a mixture is made up of elements that are chemically combined. it is extremely difficult to separate a mixture into different substances. a mixture must contain at least two different substances. a mixture is always homogeneous. which of the following is a heterogeneous mixture? [2] [3] cola brass air coffee with sugar stirred in soil [4] 5.2 cm of a metal is found to weigh 46.6 g on a three decimal balance. what is the density of the metal, expressed to the proper number of significant figures? [1] 9 g/cm [2] 9.0 g/cm [3] 8.96 g/cm 0.11 g/cm [5] 0.112 g/cm how many protons, neutrons, and electrons are there in as? ! 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