Which of the following is a combination of more than on simple machine? A. Pulley
B. Wedge
C. Scissors
D. Incline

Evaluate this exponential expression,8. (2 + 3)2 – 42

Select the correct answer how does the heat content of the reaction change in the process of photosynthesis when a glucose molecule is formed? ca the value of is negative the value of qis positive the value of a remains constant the value of a decreases the value of equals zero e

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.