Given the equation representing a system at equilibrium:
n2(g) + 3h2(g)< ==> 2nh3(g) + energywhich changes occur when the temperature of this system is decreased?
(1) the concentration of h2(g) increases and the concentration of n2(g) increases.
(2) the concentration of h2(g) decreases and the concentration of n2(g) increases.
(3) the concentration of h2(g) decreases and the concentration of nh3(g) decreases.
(4) the concentration of h2(g) decreases and the concentration of nh3(g) increases.

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

Free answer. the treaty of versailles ended world war i, but some of the terms of the treaty contributed to the beginning of world war ii. which was one of the terms of the treaty? the answer would be "germany was forces to pay reparations to the allied countries.". i hope this .

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