Chemistry and physics are a branch of what science?

How many molecules of sucrose c12h22o11 are there in 454 grams of sucrose

1) these are barrel shaped microtubules in most animal cells, that organize the spindles during cell division

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question