What existed before the universe.

At what pressure and temperature is sand most likely to be compacted into sandstone?

Suggest me an experiment to compare the conductivity between iron, zinc and copper

The reaction in which hydrogen and oxygen are produced by running an electric current through water is an example of

When the water turns blue, which has is most common

How many grams of cobalt-60 will remain after three half-lives?

A rigid cylinder with a movable piston contains a 2.0-liter sample of neon gas at STP. What is the volume of this sample when it's temperature is increased to 30 degrees Celsius while its pressure is decreased to 90 kilopascal

Write a speech aimed at year 7 to explain why some metals lose their shine over time but gold does not.

How many moles of co2 could fit in a 475 ml bag at - 22c and 1.125 atm?

How mant atoms are in 3N2

The type of nuclear decay an unstable nucleus will undergo depends on its ratio of neutrons to protons. The radioisotope cobalt-65 has a ratio of neutrons to protons of 1.41, which is too high for a nucleus of this size.