The element chlorine has two naturally occurring isotopes. About 75% of chlorine isotopes are Cl35 and about 25% are Cl37. What is the average atomic mass of chlorine atoms?

A. 35.45 amu

B. 36.45 amu

C. 37.45 amu

D. 38.45 amu

Find the four second mark on the X-axis of the graph. What comment BEST describes the two objects' motion from 0 to 4 seconds? A) Both objects show constant acceleration. B) Both show constant velocity but Accel 2 is about 4X faster than Accel 1.

An object has rotational inertia I. The object, initially at rest, begins to rotate with a constant angular acceleration of magnitude α.

Heat is added to each block at the same constant rate until it reaches a temperature of 500 k. which of the following statements is true? the specific heat capacity of aluminum is about twice that of iron.

What process makes it possible for optical fibers to transmit telephone conversations over long distances?

If two electrically charged objects repel one another, which of the statements must be true? A. One object has more electrons and the other has more protons. B. The objects do not have strong electrical fields. C.

The force of friction on an object is dependent on two things. what are they?

Are the backbones of the DNA molecule identical in all living things? A. Yes B. No C. I don't know

An object traveling at a 5.0 m/s east has a mass of 4.0 kg. what is the magnitude of the object's momentum?

Object A and B are 10m apart. Which of the following will cause the greatest increase in gravitational force between the objects? A. Increase the mass of object A. B. Increase the mass of object B. C. Increase the distance between objects A and B. D.

A large balloon is initially filled to a volume of 1.96 l at 318.44 k and a pressure of 2.89 atm. what volume of gas will the balloon contain at 1.77 atm and 336.33 k?