Which statement(s) is/are TRUE about the pressure of a gas? SELECT ALL THAT APPLY

a Pressure increases when volume increases
and temperature decreases.

b Pressure increases when temperature
increases under constant volume.

С Pressure increases when volume is
decreased under constant temperature.

D Pressure decreases when the amount of gas
is increased under constant volume and
temperature.

Balance this equation: n2 + h2 > nh3, write the following molar ratios: n2 / n2 / nh3 h2 /

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

How have the greenhouse gasses increased from the year 2000 to 2018