Classify each amino acid by the chemical properties of its side chain (r group) at ph 7 . select the amino acid that fits best in each category. each amino acid will be selected only once. which amino acid has a positively charged r group? lysine which amino acid has a negatively charged r group? glutamate which amino acid has a neutral polar r group? glutamine which amino acid has a nonpolar aliphatic r group? which amino acid has an aromatic r group?

Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. she placed a ray box in front of a mirror. she changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. which of the following is the dependent variable in this experiment? the mirror used to reflect the light the ray box used as the source of light angle at which the light from the ray box strikes the mirror angle at which the mirror reflects the light from the ray box

1.17 mol hcl and 2.5 mol naoh react according to the equation hcl + naoh -> nacl + h2o . if the limiting reactant is hcl, determine the amount of excess reactant that remains. answer in units of mol.

How can a ringing telephone can be heard through a closed door