A sample of calcium oxide (Cao) has a mass of 2.80 g. The molar mass of CaO is 56.08 g/mol. How many moles of Cao does this sample contain?
O 0.0499
0 20.0
58.9
O 157

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.

Hey guys so i need to know what is _nh3+> nh4oh ~chemistry~

20 pts ‼️ an unmanned spacecraft travels to mars. mars has a lower strength of gravity than earth. where in the image is the spacecraft’s weight the greatest?