How many grams do 4.5 × 1020 atoms of hydrogen weigh? answer in units of g

14. many depressants reduce small muscle control, making it harder for a. you to steer b. your mind to consider complex problems c. the eye to scan, focus, or stay still d. the kidneys to filter alcohol out of the bloodstream

The big bang nucleosynthesis theory states that elements were produced in the first few minutes of the big bang while elements have their origins in the interiors of stars, forming much later in the history of the universe.

The mass of a neutron is equal to the mass of a proton plus the mass of an electron. true or false false true