Atoms of which element contain 25 protons? magnesium (Mg) aluminum (Al) tin (Sn) manganese (Mn)

The orbits of ___ lie closer to the Sun than does Earth's orbit.

Is a total uncertainty of 2.98% considered bad?

Explain why subscripts cannot change when balancing a chemical equation

How did Bohr propose the particles within atom are arranged A. Protons and electrons form the nucleus with neutrons orbiting it B. Protons make up the atoms nucleus with electrons and neurons orbiting it C.

How to measure the rate of a chemical reaction

What is the atomic weight of a hypothetical element consisting of two isotopes, one with mass = 64.23 amu (26.0%), and one with mass = 65.32 amu? (a) 65.3 amu (b) 64.4 amu (c) 64.9 amu (d) 65.0 amu (e) 64.8 amu

Is this base a physical or chemical property?

Classify each of the following aqueous solutions as a nonelectrolyte, weak electrolyte, or strong electrolyte. a) LiClO4 b) HClO c) CH3CH2CH2OH d) HClO3 e) CuSO4 f) C12H22O11

Give examples of temporaty physical change

Which of these is a source of sediment? A. Fragments of other rocks B. Chemicals and Minerals dissolve in water C. Sea shells D. All of the above