Question: Water is added to liquid isopropanol (a polar liquid) to form a solution of rubbing alcohol. Describe what happens on the molecular level as the water dissolves in the isopropanol. The polar isopropanol molecules are attracted to the polar water molecules at the surface of the water. The isopropanol molecules surround the water molecules. The water molecules are carried into the solution. The water molecules spread evenly throughout the solution.

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Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

What is the most stable monatomic ion formed from nitrogen

Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n