Which radioactive isotope is used in treating cancer?

A) Carbon-14

B) Cobalt-60

C) Lead-206

D) Uranium-238

Objects 1 and 2 float as shown in the beaker below. Object 1 barely floats while 2 floats above surface. The density of the liquid in the beaker is 3.2 g/cc.

How many karats equal one ounce gold?

A student blows up a balloon, seals it tightly, and places it in a very cold freezer. After a few hours, the balloon has gotten smaller. Which of the following statements best explains the decrease in the balloon's volume? the multiple choice a.

Which are precautions to take when working with heat and fire? Check all that apply.

The periodic table was originally arranged according to

A 55.3 g sample of lead heated and then quenched in a 175g sample of water. During the quenching reaction the temperature of the water increases from room temperature, 25.0 °C, to 42.6 °C.

What conclusion can you draw from this experiment about the components of the black ink

How does the size of ions affect the conductivity of a solution?

How to write complete ionic and net ionic equations?

chromium can combine with chlorine to from corneum chloride which equation is a correct representation of this reaction