Write the formulas of the compounds formed by specified cations with the following anions: oh-, clo3-, so3^2-, hpo4^2-. . express your answers as chemical formulas separated by commas. use the given order of anions.. 1)nh4+. 2)al^3+. 3)pb^4+

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

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Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments