Read the following passage and then answer the question. All atoms contain at least one proton. With the exception of the stable hydrogen atom, all atoms also contain at least one neutron. Protons and neutrons have the same mass, which is defined as one atomic mass unit (amu). What is the mass of protons and neutrons?

Which fact represents evidence for the big bang theory?

How many moles are in 123.0 grams of kclo4?

Consider a culture medium on which only gram-positive organisms such as staphylococcus aureus colonies can grow due to an elevated nacl level. a yellow halo surrounds the growth, indicating the bacterium fermented a sugar in the medium, decreasing the ph as a result and changing the color of a ph indicator chemical. this type of medium would be referred to as a differential and enrichment culture.