A 70.0 liter sample of gas initially at 280°C is allowed to cool at constant pressure, what will the new volume in liters be at 120°C?

Volume is a measurement of how fast particles of a substance are moving

Ablock of aluminum is dropped into a graduated cylinder with an initial volume of water at 75ml and the volumes rises to 90ml. if the block has a mass of 40.5 g what is its density ?

2. what two items do autotrophs take from the environment to produce their food? 3. what are the two items that are released during transpiration from leaves? 4. what are the two membranes of the system? a. what are the two stages of photosynthesis? what are the two parts of photosynthesis?