What do you know about the sun's motion based on the nebular hypothesis model? a
There is not relationship between planetary movement and the sun.
b
The faster the sun moves, the faster the planets travel in their orbits.
c
The sun and planets both move in the same orbits
d
The sun rotates in the same direction as the planets move around the sun

Pbco3 –> pbo+ co2. how many liters of carbon dioxide gas is produced from the decomposition of 32 grams of lead (ll) carbonate?

What overall charge must all compounds have

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