Asubstance has a boiling point of 78 °c. which of the following is true about the substance?
when the substance is heated, its temperature will start rising above 78 °c after 50% of the liquid has changed to vapors.
when the substance is heated, its temperature will start rising above 78 °c after 100% of the solid has changed to liquid.
when the substance is cooled, its temperature will fall below 78 °c after 100% of the vapor has changed to liquid.
when the substance is cooled, its temperature will fall below 78 °c after 50% of the liquid has changed to solid.

Complete this brønsted-lowry reaction placing each product by its appropriate label. hso4- + hcn

1) describe the physical layout of the ocean floor ? 2) explain how the dumbo octopus swims differently than other octopus species and why this would be an advantage in the aphonic zone . 3) why are the types of organisms that live at each underwater hot vent so dramatically different ?

The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of tthe table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 9 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.