The contents of two petri dishes are described in the cable. Petri Dish

C

D

Contents of Petri Dishes

Contents

Final State of the Substance

elemental sulfur

fine yellow colored powder

compound sodium chloride white colored cubic crystals

Based on the final state, which statement is true about the substances in the petri dishes?

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

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter

Find the number of moles of argon in 364g of argon.