Which observation illustrates the law of conservation of mass?

the c: o mass ratio of a particular compound is the same, regardless of the size or source of the sample.

when 3 g of carbon reacts with 8 g of oxygen, 11 g of carbon dioxide is produced.

the c: o mass ratio of one compound is exactly double that of another compound.

burning 10 g of propane produces twice as much carbon dioxide as burning 5 g of propane.

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

What happens to isotopes that are unstable?

A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.