Answer: Star formation begins when the denser parts of the cloud core collapse under their own weight/gravity. These cores typically have masses around 104 solar masses in the form of gas and dust. The cores are denser than the outer cloud, so they collapse first.
Hope this helped! :))
Volume is 2.3×2.4×20=110.4 cm^3
there is given an object mass, so maybe you need a density too?
density = mass / volume = 17.5/110.4=0.1581 g/cm^3
Answer: A single replacement reaction looks sort of like this
A + BC —> AC + B
Explanation: It would be a LOT more helpful for us if you had provided the answer choices for this question, but I'll try to help by explaining WHAT single-replacement reactions are.
Single-replacement reactions are reactions in which one ion displaces another to form a new compound
. One reactant is an element; one reactant is a compound
. One product is an element; one product is a compound
. The reactant element is part of the compound product
.
I hope this helped!
Cirrus clouds are only formed at very high altitudes (6000+ metres). At such temperatures temperatures are subzero and therefore cirrus clouds are made of ice crystals
A Barometer is used to mesure atmosphereic pressure
