Which equation represents a combustion reaction? pb(no3)2 + 2hcl → pbcl2 + 2hno3 2so2 + o2 → 2so3 2c2h6 + 7o2 → 4co2 + 6h2o ca + 2hcl → cacl2 + h2

Which of the following is an example of units for speed

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

Which two particles are found in the center of an atom