Round all answers to hundredths (two decimal places). Do not put a space between your numbers and the multiplication symbol. Use the ^ symbol (shift+6) between the base ten and your exponent. For example: 4,538,500,000 = 4.54x10^9 How many seconds are in 3.7 weeks?

Henry moseley used x-ray experiments to determine the atomic number of elements. how did his discovery contribute to the development of the periodic table? a.it confirmed that elements should be arranged in strict order of increasing atomic mass. b.it led to elements with similar atomic numbers being grouped together. c.it allowed the elements to be placed in strict order of increasing atomic number. d.it showed that the way mendeleev grouped elements together was completely wrong.