Agood reaction that gives off a bright light occurs when magnesium is burned in a bunsen burner. as a result, it binds with oxygen in the air. what is the balanced chemical equation for this reaction?

a)
mg + o → mgo

b)
mg + o2 → mgo2

c)
2mg + o → mg2o

d)
2mg + o2 → 2mgo

Two forces produce equal torques on a door about the door hinge. the first force is applied at the midpoint of the door; the second force is applied at the doorknob. both forces are applied perpendicular to the door. which force has a greater magnitude?

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?

Atank is filled with an ideal gas at 400 k and pressure of 1.00 atm . part a the tank is heated until the pressure of the gas in the tank doubles. what is the temperature of the gas?