The doppler effect indicates that the universe is expanding because
a. light from other galaxies is the same color.
b. light from other galaxies is different colors.
c. light from other galaxies is blue shifted
d. light from other galaxies is red shifted.

If 1.63 times 10 negative 4 of helium dissolves in 100.0g of water, what is the concentration in parts per million

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.

What is the number of neutrons in an atom with atomic mass of 35