What is the oxidation half-reaction for 2Mg + O2 + 2Mgo?

A. Mg2+ + 2e → Mg
B. Mg → Mg2+ + 2e
C. 202 → 02 +42
D. 02 +48 202

As you watch a surfer ride a wave towards the shoreline, what is the shoreline? a) displacement reference b) reference point c) coordinate plane d) cartesian boundary

The scheme below is from a series of reactions that are part of a synthesis of vitamin a. answer the following questions with reference to this scheme. (i) what is "reagent a"? (ii) draw a step-by-step mechanism which explains the formation of compound c from compound b (iii) which reagents would you use to form compound e from compounds c and d (reagents b and c)? for each reagent suggested above in (ii) explain the role of the reagent in the reaction to (iv) form compound e. you may wish to do this by drawing a mechanism. 1. addition of reagent a но reagent a 2. н, о" thо oh нон-с compound a. compound b. compound c .ch-оh 1. reagent b "сно 2. reagent c сh oh compound e. compound d.

What role does weathering have in shaping earth’s surface? a) it allows sediments to fall out of a medium. b) it sediments settle on a new surface. c) it breaks down older material into sediments. d) it transports sediments to a different location. will give brainliest, answer quickly.