Figure 4 of 4 Water, 20 °C 5.6 g d = 0.99821 g/cm³ Alternate data Laboratory measurements always contain some error. Depending on the type of equipment used, that error can be quite substantial. One way to validate our density value from Part B is to do a completely different experiment to measure of the density of the block, then compare the two measurements. Part C Based on the first and fourth sketches (Figure 4), what is the density of the block? Express your answer with the appropriate units. μÀ Value Units ? Submit Hints My Answers Give Up Review Part

POST-QUESTIONS 1. After a student dissolved 0.5 g of white solid in water, she tested the conductivity and determined that the solution did not conduct electricity. The student then concluded: "when the white solid dissolved it 'just disappeared' so some sort of error must have been made because all solids are ionic compounds and, therefore, are electrolytes." Comment on the student's conclusion. Is her statement a valid conclusion? If so, identify what is correct. If not, write a conclusion that would be correct.

Match the following terms to their definitions: Aqueous solution, cation, centrifuge, decant, flame test, precipitate, qualitative analysis, supernate An instrument that spins test tubes to separate solids from liquids is called a ..... ? Group of answer choices Aqueous Solution Flame Test Precipitate Centrifuge Supernate Decant Cation Qualitative Analysis

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