Some metals cannot be welded in air because hot metal reacts with oxygen and nitrogen in the air. How do you think such metals are welded?

For the following dehydrohalogenation (e2) reaction, draw the zaitsev product(s) resulting from elimination involving c3–c4 (i. e., the carbon atoms depicted with stereobonds). show the product stereochemistry clearly. if there is more than one organic product, both products may be drawn in the same box. ignore elimination involving c3 or c4 and any carbon atom other than c4 or c3.

Frictional forces acting on an object are often converted into energy, which causes the temperature of the object to rise slightly.

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?