Lithium reacts with oxygen to form lithium
oxide according to the equation: 4Li + 0, →
2L1,0. If 27.8 g of Li react completely with
32.0 g of Oz, how many grams of Li, are
formed?

Which statement about covalent bonds is true

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.

In which of the following is positive work done by a person on a suitcase