Which of these equations describes photosynthesis? a. 6co2 + c6h12o6 --> 6h2o + 6o2 b. 6co2 + 6h2o --> c6h12o6 + 6o2 c. c6h12o6 + 6o2 --> 6co2 + 6h2o d. 6co2 + 6o2 --> c6h12o6 + 6h2o

Asample contains 16.75 g of the radioisotope u-236 and 50.25 g of its daughter isotope, th-232. how long did it take for decay to take place if one half-life of u-236 is 23 million years? 46 million years 69 million years 92 million years 115 million years

12. complete each of the following word equations for synthesis reactions. a. sodium + oxygen -> b. magnesium + fluorine -> 13. complete and balance the equations for the decomposition reactions. a. hgo -> [with the triangle heat symbol above the arrow] b. h2o(l) -> [with "electricity" written above the arrow]

Your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?