Which excerpt from "Black Hole Beginnings' would this
image best support in a multimedia presentation?
O
O
Before a star is a star, it is an enormous cloud of
gases
As the nuclei meld, a smidgen of their matter vaporizes
into energy
It pushes on the star's outer gases, which flow outward
in giant surges of heat and light.
Tighter and tighter the material contracts, crunching in
so fast and so hard that it is destroyed.
o
O

In which reaction is precipitation occurring?

Ants live on acacia trees in south america. the ants feed on sugars secreted by the trees. the trees provide room for the ants to live. the ants sting any other insect or animal that comes to eat the trees. what type of relationship is this?

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)