WHAT ELEMENT I am found in the transition metals above Period 5 and I am found naturally in the Earth's crust.. I am often associated with the color blue. I am

If you want to create an electrical current, which situation would produce a solution capable of this

What mass of natural gas (ch4) must you burn to emit 276 kj of heat?

Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?