Almost 99% of earths atmosphere is made up of two gases. what are the two gases and the percents of each? a) 21% oxygen and 78% nitrogen b) 21% water vapor and 78% oxygen c) 21% nitrogen and 78% oxygen d) 21% carbon dioxide and 78% oxygen pls

Which of the following contributes to the structural rigidity of cellulose? adjacent glucose polymers are stabilized by hydrogen bonding. glucose residues are joined by (α1→4) linkages. cellulose is a highly branched molecule. the conformation of the glucose polymer is a coiled structure.

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?