The Kuiper Belt is a region beyond Neptune that is 55 astronomical units (AU) from the Sun. It contains smaller bodies that scientists think are pieces left over from the formation of the Solar System. Which of the following best states how scientists know that the Kuiper Belt is part of our solar system?

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

As changes in energy levels of electrons increase, the frequencies of atomic line spectra they emit

Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility