Jude has a 20.00 L cylinder full of acetylene gas that he will use for welding in his workshop. If the pressure of the cylinder is 1780 kPa and the workshop is at 25.0 °C, then how many moles of acetylene are in the tank?

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Consider the following multistep reaction: a b→ab(slow) a ab→a2b(fast)−−−−−−−−−−−−−−−−− 2a b→a2b(overall) based on this mechanism, determine the rate law for the overall reaction. express your answer in standard masteringchemistry format. for example, if the rate law is k[a]3[b]2 type k*[a]^3*[b]^2

Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.