The center of hemoglobin is made of which of the following?

What is the definition of plate tectonics?

Planet z-34 has a mass equal to 1/3 that of earth, a radius equal to 1/3 that of earth, and an axial spin rate 1/2 that of earth.

Deuterium is an isotope of hydrogen. the nucleus of a deuterium atom consists of one proton and one neutron. when 2 deuterium nuclei fuse, helium-3 is formed, and a neutron is emitted. which equation illustrates this process?

What net force will make a 5 kg bowling ball accelerate by 1.5 m/s2

Which of the following states of matter has a definite shape? A. solids and liquids only B. liquids and gases only C. liquids only D. solids only

Which of the following transfers carbon from the nonliving environment to the living environment? Photosynthesis Cellular respiration Burning Decomposing

Which term describes this reaction? CH3Br (aq) + OH - (aq) - > CH3OH (aq) + Br - (aq) a. addition b. condensation c. elimination d. substitution

The elements of which group are nonreactive? halogens alkaline earth metals noble gasses alkali metals

Which best describes the definition of Lewis acids and bases? a general definition based on electron structure a general definition based on hydrogen ion concentration a specific definition based on a compound's ability to accept protons a specific

Question 22 Which change would cause the volume of a balloon to increase? A increasing the temperature of the balloon B increasing the atmospheric pressure C removing gas from the balloon D placing the balloon under water