Does acetylene, c2h2 have a linear shape and the bond angle of 180º?

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

What will most likely happen in the absence of a cell membrane? a) photosynthesis will not take place. b) the cell will not store food, water, nutrients, and waste. c) energy will not be released during cellular respiration. d) substances will pass in and out of the cell in an uncontrolled manner.

Asample of tin (ii) chloride has a mass of 0.49 g. after heating, it has a mass of 0.41 g.  what is the percent by mass of water in the hydrate?   %