Match the reaction to the type that best describes it.

a. c + 2h2 ch4
b. co2 o2 + c
c. 2cu + mncl2 mn + 2cucl
d. nabr + kf naf + kbr
combination
decomposition
double replacement
single replacement

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.

What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.

What natural processes produce large quantities of co2