18- Aşağıdakilerden hangisi uzay çalışmaları sırasında geliştirilmemiştir?
A) Mikrocipler
B) Duman sensörleri
C) Hali
D) Çizilmeyen cam

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.

Which type of fossil does this image depict?