5.0 g of copper was heated from 20°C to 80°C. How much energy was used to heat Cu?

If you have 5.25 grams of methane (ch4), how many grams of co2 will you produce ?

Explanation for basic character?

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space