Write the chemical formula for the anion present in the aqueous solution of Pb(NO3)2. Express your answer as a chemical formula. Do not include coefficients or phases in your response.

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 .

The boiling point of liquids is very high what does it indicate

How many moles of gas are present if p=11 atm, v=12l, t=185k?