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?

The two waves in the diagram are occupying the same place at the same time. At what time will the interfering waves have an amplitude of zero? 1.0 3.0 4.0

On an ice rink, two skaters of equal mass grab hands and spin in a mutual circle once every 2.3 s. if we assume their arms are each 0.85 m long and their individual masses are 65.0 kg, how hard are they pulling on one another

Fahd is trying to write a focused scientific question. He writes, "Does the material something is made of affect its density?" How could Fahd's question best be rewritten? How does changing an object's material change its density?

Which term defines a powers shared by state and federal governments? A. Concurrent. B. Expressed. C. Implied. D. Reserved

What is thr principle of screw gauge

How does the velocity, the distance it has fallen and the acceleration of a free falling body change with time?

Woman pulls a 6.87 kg suitcase, initially at rest, with a 29.2 N force along the handle at 57.7º. Friction pulls back at 12.7 N, and the suitcase moves 5.93 m. What is its final speed? (Unit = m/s)

Suppose you know a golf ball's horizontal velocity and the time it has traveled through the air. how could you calculate how far the ball traveled

What is a radio interferometer? a device for correcting chromatic aberration in radio telescopes a device for absorbing and transmitting radio waves a network of several radio telescopes wired together a radio communication network joining several

In which galaxy is our solar system located? a. milky way b. ngc 4414 c. andromeda d. small magellanic cloud