Flourine gas is placed in contact with Calcium metal at high temperatures to produce Calcium Fluoride powder. What is the formula equation for this reaction? F2(g) + Ca(s) ---> CaF2(l) F2(g) + Na(s) ---> NaF2(s) F2(g) + Ca(s) ---> CaF2(s) F2(g) + Na(s) ---> NaF2(l)

Dwayne filled a small balloon with air at 298.5 k. he put the balloon into a bucket of water, and the water level in the bucket increased by 0.54 liter. if dwayne puts the balloon into a bucket of ice water at 273.15 k and waits for the air inside the balloon come to the same temperature, what will the volume of the balloon be? assume the pressure inside the balloon doesn’t change. type the correct answer in the box. express your answer to the correct number of significant figures. the volume of the balloon at 273.15 k is liters.

Which of the following words describe the reality that the universe looks the same from various perspective

The term gas is limited to those substances that exist in the gaseous state at