Which of these is formed from lava flows

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Athermometer is removed from a room where the temperature is 70° f and is taken outside, where the air temperature is 10° f. after one-half minute the thermometer reads 60° f. what is the reading of the thermometer at t = 1 min? (round your answer to two decimal places.) ° f how long will it take for the thermometer to reach 30° f? (round your answer to two decimal places.)

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane