Given the following reaction equation for the synthesis of Phosphorus Trichloride. Is the reaction endothermic or exothermic? P4(s) + 6 Cl2(g) → 4 PCl3(g) + 1152 kJ

Exothermic because heat energy is a product.

Endothermic because heat energy is a product.

Endothermic because heat energy is a reactant.

Exothermic because heat energy is a reactant.

Imagine that you’re getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because you’ve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown

Compare and contrast physical changes with chemical changes.

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