K2O

Use IUPAC nomenclature rules to properly identify this compound.

A) potassium oxide

B) dipotassium oxide

C) potassium (I) oxide

Eliminate

D) dipotassium monoxide

Which is the most abundant element in the Sun?

A body moving at. 500c with respect to an observer disintigratesinto two fragments that move in opposite directions relative to their center ofmass along the same line of motion as the original body. Onefragment has a velocity of.

What is formed when the number of electrons does not equal the number of protons. a). Atom b). Isotope c). Ion

A hollow glass sphere has a density of 1.30g/cm cubic at 20°C. Glycerine has a density of 1.26g/cm cubic at 20°C. At what temperature would the sphere begin to float in glycerine? Given coefficient of volume expansion of glycerine is 53 * 10^-5 / °C.

2. The product of an object's mass and velocity is its centripetal force. momentum. net force. weight. 3. What is conserved when two objects collide in a closed system? acceleration momentum speed velocity 4.

The gamma ray released by each decay carries 140kev of energy. find the total energy e released by decays in the 2 hours.

Think of the last five things you read. Now think of a type of reading you havent done recenty have never read. What kind of pattern do you see in your reading? What is your favorite type of reading and your least favorite type of reading?

Consider this statement: Air is matter. Which facts best support the statement? A. Balloons can be filled with air. B. Air is essential for life to exist. C. Air has mass. D. Air is not an element. E. To float on air is to be happy. F.

Hydroelectric power uses: wind water coal the sun

Two lightweight metal spheres are suspended near each other from insulating threads. One sphere has a net charge; the other sphere has no net charge. The spheres will: A. Attract each other B. Exert no electrostatic force on each other C.