What atomic or hybrid orbitals make up the bond between C1 and C2 in propyne, CHCCH3 ?

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Which statement best describes what happens when molecular compounds melt

In a chemical reaction, the final amount of the products is determined by the a. universal gas law b. law of definite proportions c. air pressure d. temperature e. none of the above me