Ahelium balloon is filled in a store at room temperature (24°c) to a volume of 6.5 l. the balloon is then taken outside where the temperature is only 8°c. what is the new volume of the balloon? 6.1 l 6.9 l 2.2 l 19 l

Rosa records the distance that a toy car rolls and the time it takes to cover the distance. what scientific practice is this? collecting data asking a question providing explanations communicating results

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.

The electric field inside a cell membrane is 8.0mn/c. what's the force on a singly charged ion in this field?