How many moles of oxygen gas are needed to react completely with 17.9 ml mg, with a density of 1.74 g/ml?

unbalanced equation: mg + o2 “yields”/ mgo

0.212 mol o2

0.641 mol o2

1.28 mol o2

2.56 mol o2

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

Express the following number in scientific notation. 0.026890 =