The equation shows neutralization of an acid and a base to produce a salt and water.

2HCl + Na2O → xNaCl + H2O

Which value of x will balance the equation?

A box that has a mass of 80 kg slides down a ramp with a 30 degree angle. The free-body diagram shows the forces acting on the box. Ignoring friction and air resistance, what is the acceleration of the box, to the nearest tenth? -0.5 m/s2 -4.

If your bedroom is cold, you might feel warmer with several thin blankets than with one thick one

What is the kinetic energy of a 2000 kilogram boat moving and a 5.0 meters per second

Definition of artficial and natural radioactivity

You did 200 of work lifting a 150 newton-pack. how high did you lift the bookbag

What two factors determine how fast weathering occurs

A sound that's produced by a single wave at a constant frequency and with no overtones is called

Which of the following is ignored when determining the relative mass of atoms? protons nucleus electrons. neutrons

Gamma radiation can be significantly reduced by ... A sheet of paper Air A 3 mm thickness of aluminium Several cm of lead

Why is it possible to remove a paper without moving the object on it. (apply newton's law)