In the reaction 2Al(s)+ 6 HCl(aq) = 2AlCl3(aq)+3H2(g) Of 37.0 moles of Al are reacted with excess HCl and 12.5 moles of H2 are formed, what is the percent yield of the reaction? PLEASE HELP I NEED THIS DESPERATELY

We the people of the united states, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defence, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this constitution for the united states of america. according to the preamble which action represents an appropriate role for government

Which scenario describes intraspecific, indirect competition? a. a peacock defends its territory against another peacock. b. lions and hyenas compete for the same prey animals. c. a male black bear eats fish in an area of a lake, so other black bears can’t. d. different species of birds fight over spilled popcorn on the ground.

What are the two main purposes of edgar allen poe’s, “the masque of the red death? ”