Samples of compound X, Y, and Z are analyzed, with results shown below. Compound X Description clear, colorless, liquid with strong odor clear, colorless, liquid with strong odor clear, colorless, liquid with strong odor Mass of Hydrogen 0.148 g 0.329 g Mass of Carbon 1.776 g 1.974 g 7.812 g Y Z 0.651 Which of the following does not represent the Law of Multiple Proportions?

Where applicable, answers accurate to 3 or 4 significant figures unless otherwise specified. 3. Tungsten has 4 major isotopes. Given the atomic weight of tungsten, 183.85, complete the following table. You must show your work, avoid rounding off intermediate values, and report your % abundance values accurate to 2 decimal places. Isotope Tungsten-182 Tungsten-183 Tungsten-184 Tungsten-186 % Abundance Exact Mass 181.9482 182.9502 26.50 14.31 183.9509 185.9544

Imagine two new elements have been discovered with symbols Q and Z. Q is in group 2A and Z is in group 7a on the periodic table. What is the formula of the ionic compound that these two elements can form? Q₂Z₂ QZ₂ Q₂Z QZ ZQ₂ O Z₂Q2 O Z₂Q

Complete the table below by writing the symbols for the cation and anion that make up each ionic compound. The first row has been completed for you. cation anion NaCl Na Cl × ionic compound Co. (PO) Cul₂ Fe2(SO₂), V Br 3 ☐ U ☐ ☐