How many grams are in 5.61 moles of Na2O?

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 .

What state of matter is ice a. liquid b. element c. solid d. gas

How might this scientific phenomena be explained? a paper clip floats on water.