4kf + o = 4of + k, what kind of chemical reaction is this?

One mole of zinc has a mass of 65.4 grams. approximately how many atoms of zinc are present in one mole of zinc? 32 × 1023 atoms 6 × 1023 atoms 66 atoms 65 atoms

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.