What is the name of group 6a, 7a, and 8a

Uranium-235 has a half-life of 713 million years. Would uranium-235 or carbon-14 be more useful for dating a fossil from Precambrian Time? Explain.

A certain liquid has a density of 2.67 g / cm3. what is the volume occupied by 1340 g of this liquid?

What is Argon? A metal, non metal, or Metaloid?

At present, cosmologists expect the universe to

What is the molarity of a solution that contains 12 moles of solute and 583 ml of solution?

If we have 22 molecules of sodium sulfate in water, how many sodium ions will be observed in solution?

Sodiun atom, potassium atom, and cesium atoms have the same?

A molecule is what?

How many electrons in an atom could have these sets of quantum numbers n=7 l=3 ml=-1?

The reaction A+B-> C+D rate=k[A][B]^2 has an initial rate of 0.0810 M/s. What will the initial rate be if [A] is halved and [B] is tripled? What will the initial rate be if [A] is tripled and [B] is halved?