An average microwave uses a frequency of 2.54 GHz. How much energy is emitted?

Which radioactive isotope is commonly used to date wooden artifacts?

What do we call the time it take to travel around the sun one time? - Astronomy Class

At which condition will the entropy of a pure solid be zero?

Hydrogen gas is explosive within the given range of 4% - 75% v/v. Assuming that each student in your class produces 6L of H2 and that the lab is not ventilated, is there a danger of an explosion?

Which of the following is an example of an irreversible physical change? A. Melting a piece of lead B. Boiling water C. Sharpening a pencil D. Dissolving sugar into water

How many unpaired electrons arethere in Cu1 + ion

A 750 mL sample of nitrogen is heated from 30°C to 92 C at constant pressure. What is the final volume?

Write a brief explanation about why a plant extract is a mixture

What is an element that has more valence electrons than fluorine and less energy levels than sodium?

Why can't we breathe in pure oxygen for long