Carbon-14 has a half-life of 5,730 years. Suppose a fossil from a mammal contains one-fourth of its original amount of carbon-14. How old is the sample?

Consider all the different polysaccharides that exist across species and then select all of the following characteristics that can vary among polysaccharides. a. amount of branching b. types of bonds (glycosidic) between monomers c.

How will the vapor pressure of an aqueous solution of sodium chloride compare to that of pure water?

Describe how a physical property such as master texture can change without causing a change in the substance

Laundry bleach is an aqueous solution containing 4.55% NaOCl by mass assume a density of 1.02 g/mL

List three metal ions that commonly participate in biological redox chemistry, and give examples of how they participate.

Name 3 characteristics that can be used to identify minerals

Hemoglobin, the oxygen-carrying protein in red blood cells, has four iron atoms per molecules ad contains 0.340 percent iron by mass. calculate the molar mass of hemoglobin

Nancy wants to find out how the steepness of a hill's slope affects the amount of soil that erodes from it. She has soil, a long pan, and a pile of books with which to build a model hillside. She has a watering can to model rainfall.

Elements on the periodic table are arranged by increasing?

What is the difference between molecular formula and molecular model