Consider the equilibrium: 2no(g) + cl2(g) = 2nocl(g)
for which ΔHº = -77.07 kJ.
How will the amount of Cl2 at equilibrium be affected by the following changes
Questions:
_ Removing NO(g)
_ Adding NOCl(g)
_ Raising the temperature
_ Decreasing the volume of the container
_ Addition of catalyst

Choices:
A. increase
B. decrease
C. no effect

How does chemistry affect our world? a. chemicals makes our world more polluted. b. chemicals keeps us healthy. c. chemicals can or hurt our world. d. chemicals make our world safe to live in.

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

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.