21.Electromagnetic radiation can take the form of which of the following types of waves a. Heat
b. Light
c. Ultraviolet
d. All of the above

Calculate the enthalpy of the following reaction: 4 b (s) + 3 o2 (g) → 2 b2o3 (s) given the following pertinent information: (a) b2o3 (s) + 3 h2o (g) → 3 o2 (g) + b2h6 (g), δhoa = +2035 kj (b) 2 b (s) + 3 h2 (g) → b2h6 (g), δhob = +36 kj (c) h2 (g) + latex: \frac{1}{2} 1 2 o2 (g) → h2o (l), δhoc = −285 kj (d) h2o (l) → h2o (g), δhod = +44 kj

Based on the law of conservation of energy, which statement is false? answer- energy is lost when machines dont work right

What mass of carbon dioxide is produced from the complete combustion of 4.50×10−3 g of methane?