The equation for photosynthesis is 6H2O (water) + 6CO2 (carbon dioxide) + Light Energy → C6H12O6 (glucose) + 6O2(oxygen). When first discovered, scientists were trying to decide if the oxygen in the product came from carbon dioxide or water. Which statement describes how scientists traced the path of oxygen?

A 241.3 gram sample of CoCl2 2H₂O is heated to dryness. Find the mass of anhydrous salt remaining. ●

What type of reaction is… C6H14 (l) + O2 (g) →

Answer the questions in the table below about the shape of the borane (BH3) molecule. How many electron groups are around the central boron atom? Note: one "electron group" means one lone pair, one single bond, one double bond, or one triple bond. What phrase best describes the arrangement of these electron groups around the central boron atom? (You may need to use the scrollbar to see all the choices.) (choose one) X G <

What is the mass percent of water in Zn(NO₃)₂･6 H₂O?

what is the density in g/L (STP) of SO2?

[References] Hydrogen cyanide, HCN, is prepared from ammonia, air, and natural gas (CH4) by the following process: 2NH3 (g) + 30, (g) + 2CH, (g) → 2HCN(g) + 6H, 0(g) Hydrogen cyanide is used to prepare sodium cyanide, which is used in part to obtain gold from gold-containing rock. If a reaction vessel contains 6.10 g NH3, 13.0 g 02, and 5.83 g CH4, what is the maximum mass in grams of hydrogen cyanide that could be made, assuming the reaction goes to completion as written? Mass g HCN Submit Answer Try Another Version 3 item attempts remaining (Previous Next Save and Exit

Calcium carbide, CaC2, reacts with water to form acetylene, C2H2, and calcium hydroxide. Write a balanced equation for this reaction. (You do not need to write the states.) If you were designing the procedure for producing acetylene from calcium carbide and water, which of the reactants would you have as the limiting reactant? Why? Assuming 100% yield from the limiting reactant, what are the approximate amounts of CaC2 and water that you would combine to form 127 g of C2H2?

Which of the following reactions would be an example of nitrogen fixation? Multiple Choice O 2 NO(g) + O₂(g) → 2 NO₂(g) 2 NO(g) → N₂(g) + O2(g) 2 NH3(g) → N2(g) + 3 H₂(g) N2(g) + O2(g) → 2 NO(g)