If a fossil sample originally contained 5 grams of carbon-14 and the half-life of carbon-14 is 5,700 years. After 11,400 years how many grams of carbon-14 would remain

By which mechanism would a steroid molecule diffuse into the cell?

What happened when the earth rotates? What happens when the earth revolves? How does the sun's apparent movement affect what shadows do?

What does the electron sea model for metals suggest?

Which of the following characteristics of a watershed would act to reduce erosion? channels with a low gradient soil with a high porosity a large number of lakes large floodplain areas

1. a substance that changes the rate of the reaction, and is not consumed in the reaction solution 2. a uniform mixture of molecules or ions of one substance in another solvent 3. the substance dissolved in a solution solute 4.

Lithium (Li) and oxygen (O) are both in period 2. They both have? a. similar properties b. the same number of protons c. two electron shells d. the same number of electrons

What compares a law and a theory?

Explain what domain would best be represented by the "?" in the diagram. A) Eukarya because the organisms are all eukaryotic. B) Eukarya because the organisms are all prokaryotic. C) Bacteria because some of the organisms are autotrophs.

If you are eating a hamburger, it is an example of a consumer eating another consumer. a) true b) false

What mass of NaNO3 is needed to make 3.5 L of 2.2 M solution? (Na = 23.0g, N=14.0g, O=16.0g) Explain in steps