What kind of energy is required for photosynthesis to occur? a. solar energy b. energy stored in chemical bonds c. thermal energy d. energy from nutrients in the ground

Astudent is asked to identify and element that is pale yellow brittle solid and does not conduct electricity. at which location in this periodic table would the element most likely be found?

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

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