Which rule for assigning oxidation numbers is correct

Hydrogen is usually - 1.

Oxygen is usually - 2.

Apure group 1 element is + 1.

Amonatomic ion is 0.

Explain how the atom is a part of the electrical current process.

Which of the following statements is true? A) Organic compounds contain only carbon and hydrogen. B) About 10 percent of all known compounds are organic compounds. C) Organic compounds always contain carbon and hydrogen.

How do I rank glass, oil, and water in terms of their index of refraction?

A football punter accelerates a football from rest to a speed of 15 m/s during the time in which his toe is in contact with the ball (about 0.23 s). if the football has a mass of 0.45 kg, what average force does the punter exert on the ball

Which of the following is the best example of kinetic energy? A. A bowling ball rolling toward the pins B. A horse standing in an open field C. A pitcher preparing to throw a ball D. A runner in position at the start line

A geologist finds ripples preserved in ancient sedimentary rock that look just like ripples made by water in mud. He concludes that there was once water in that location that created the ripples. Why is this conclusion reasonable?

In science what is the requirement of doing work?

What Fitness Gram test is assessing your cardiovascular endurance?

A graph titled Position versus time for with horizontal axis time (seconds) and vertical axis position (meters). A straight blue line runs with an upward slope from 0 seconds 3 meters to 4 seconds 15 meters. The starting position of this object is m.

There is a 50 g sample of Ra-229. It has a half-life of 4 minutes. How much will be left after 12 minutes?