Ethyne differs from ethene in what way?

What does it mean for something to be dissolved in watera- it is submerged in water moleculesb-it is stirred in the water moleculesc- it is surrounded by water molecules d-it has water molecules added to it

1. which of the following is an si base unit for time? (2 points) decades hours minutes seconds 2.which of the following tools should a scientist use to measure an object in milligrams? ( graduated cylinder pan balance tape measure thermometer 3. which of the following prefixes represents the largest value? (2 points) giga hector kilo milli

How are conditions of pressure and temperature, at which two phases coexist in equlibrium, shown on a phase diagram? a. by a line separating the phases b. by the endpoints of the line segment separating the phases c. by the planar regions between lines in the diagram d. by a triple point on the diagram