Complete the reactions below and label them as redox or non-redox. a. Ca + O2 -->
b. Al + Fe2O3 -->
c. CuF2 + H2SO4 -->
d. C4H10 + O2 -->

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

For each of the following types of reactions, write a general reaction formula in the symbolic form—for example, a + b → ab. single-displacement double-displacement synthesis decomposition

What layer of the atmosphere is directly above the troposphere?