Q.15. Which of the following chemical reactions represents an acid-base reaction? a) HBr + NaOH → NaBr + H2O
b) 2NaCl + F2 2NaF + Cl2
c) Zn + CuSO4 → ZnSO4 + Cu
d) C10H8 + 12O2 → 10CO2 + 4H2O

What effect might melting sea ice have for people who live in coastal areas?

The blackbody curve for a star name zeta is shown below. what is the peak wavelength for this star ?

Identify one disadvantage to each of the following models of electron configuration: -dot structures -arrow and line diagrams -written electron configurations type in your answer below. (answer) -dot structures do not show the distribution of electrons in orbitals and take up a lot of space. -arrow and line diagrams take up a lot of space and make it difficult to count electrons. -written configurations make it easy to lose count of electrons and do not show the distribution of electrons in orbitals.