If sodium has one valence electron and sulfur has six, how many sodium atoms are needed to form an ionic bond with sulfur?

ITS TWO

How are weathering, erosion, and deposition related to the rock cycle

A proton moves at 4.50 * 105 m/s in the horizontal direction. It enters a uniform vertical electric field with a magnitude of 9.60 * 103 N/C. Ignoring any gravitational effects, find (a) the time interval required for the proton to travel 5.

Which of the following is an example of a first class lever?

A 1000 kg car moves as speed from 10 m/s to 30 m/s in 20 seconds. What is the average speed? What is the acceleration? What is the average force acting upon it?

10 moles of sulfur dioxide gas (Pitzer accentric factor = 0.25, critical temperature = 430K, critical pressure = 78 atm) are placed in a 10-L cylinder stored at 180 degrees Celsius.

What will happen if I put my hand in a space vacuum.

You are exploring a distant planet. When your spaceship is in a circular orbit at a distance of 630 km above the planet's surface, the ship's orbital speed is 4900 m/s. By observing the planet, you determine its radius to be 4.48*106m.

What happens when an electric current passes through a wire?

A small car of mass m and a large car of mass 4m drive along a highway at constant speed. they approach a curve of radius r. both cars maintain the same acceleration a as they travel around the curve.

Two physics professors challenge each other to a 100 m race across a football field. The loser will grade the winner's lab reports for a month. Dr. Nelson runs the race is 10.40s. Dr. Bay runs the first 25.0 m with an average speed of 10.