If 2.0 liters of oxygen gas react with excess carbon monoxide at stp, how many liters of carbon dioxide can be produced under the same conditions?
2co (g) + o2 (g) yields 2co2 (g)
a 1.0 l
b 2.0 l
c 4.0 l
s 6.0 l

Which metal exist in liquid state and can be cut with knife ?

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

13. a covalent bond between two atoms is likely to be polar if: a. one of the atoms is much more electronegative than the other. b. the two atoms are equally electronegative. c. the two atoms are of the same element. d. the bond is part of a tetrahedrally shaped molecule. e. one atom is an anion.