The spectra for elements are

a. all the same
b. the same for a chemical family
c. the same for elements with similar mass
d. all different and specific to each

You carry a 7.0-kg bag of groceries 1.2 m above the ground at constant speed across a 2.7m room. how much work do you do on the bag in the process? (a) 157j (b) 0.00j (c) 185j (d) 82j

Which of the choices below is one of the primary gases found in the atmosphere? a. helium b. carbon dioxide c. nitrogen d. argon

Why is the use of carbon-14 limited