3. A volume of 90 mL of 0.2 M HBr neutralizes
a 60 mL sample of NaOH solution. What is
the concentration of the NaOH solution?

Why do you suppose the structural polysaccharide cellulose does not contain branches? why do you suppose the structural polysaccharide cellulose does not contain branches? branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby decreasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby increasing the rigidity and strength of the microfibrils. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby increasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby decreasing the rigidity and strength of the microfibrils.

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Use the periodic table to determine the electron configuration of dysprosium (dy) and americium (am) in noble-gas notation.