Anne brought a 1 l bottle of vinegar from home to use in an experiment on volcanoes in science class. she poured the contents of the bottle into a large beaker and carefully measured it. she was surprised to find that the vinegar's measured volume was actually 1.02 l. anne thought the bottle contained exactly 1 l of vinegar. what possible explanation can you think of for the difference?
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The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.

Calculate the number of molecules present in 0.750 mol of mgo.

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.