St. Paul uses 1.56 X 108 gallons of water/day. How many gallons of water must be pumped from the Mississippi River every second to supply the city

How many miles of water are produced if 5.43 mol pbo2 are consumed

Identify two types of chemical bonding in the source of dietary potassium

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