Which of Earth's topographical features can affect weather patterns?*
A. oceans
B. lakes
C. mountains
D. all of these

If the mass of the products measured 120g what would the mass of the reactants a. 30g b. 60g c. 120g d. 240g

Element j is 1s 2s 2p 3s . (i) how many unpaired electrons does j have? (ii) is j a good oxidizing agent or a reducing agent? (iii) state reason for the answer.

The independent variable in an experiment will be the variable that you o a) change ob) hold constant ng c) observe for changes