Which are long chains formed by the process of polymerization? subunits ethylenes monomers DNA strands

What is the scientists next step if he concludes that his hypothesis is false?

Which element has six valence electrons in each of its atoms in the ground state? (1) Se (2) As (3) Kr (4) Ga

Two liquids are shaken together in a test tube to produce a mixture that quickly separates into two layers. Which of the following best describes the behavior of the above pair of substances? soluble insoluble miscible immiscible

Potassium-40 has a half-life of 1.25 billion years (by) and decays to argon-40. how old is a fossil that has a 40k/40ar ratio of ~ 26%?

The temperature outside is 39 ∘C, and the air pressure is 0.800 atm. Your neighbor, who released the balloon, tells you that he filled it with 3.80 moles of gas. What is the volume of gas inside this balloon?

In the formula for the compound xcl4 the x could represent

What is the main function of antibodies? A: "Remembering" the characteristics of germs that have invaded your body in the past B: Creating new white blood cells C: binding themselves to invading antigens D:Signaling your immune system that antigens

In the reaction 2H2O (l) + 2Cl - (aq) → H2 (g) + Cl2 (g) + 2OH - (aq), which substance is reduced? A. H2O B. Cl C. H D. OH E. None of the Above (This is not a redox reaction.)

Which statements about the periodic table's organization are true? Select all that apply. The periodic table is organized by atomic number. The periodic table is organized by reactivity. The periodic table is organized by atomic mass.

He definition "'oxygen' means an element having an atomic weight of 8 and an atomic number of 16" is an example of: