Obtain The Following Number Of Legos Atom Hydrogen Oxygen Water Can Decompose Into Hydrogen And Oxygen Gas The Followi 1 (56.72 KiB) Viewed 41 times
Obtain The Following Number Of Legos Atom Hydrogen Oxygen Water Can Decompose Into Hydrogen And Oxygen Gas The Followi 2 (50.2 KiB) Viewed 41 times
Obtain the following number of Legos. Atom Hydrogen Oxygen Water can decompose into Hydrogen and Oxygen gas. The following unbalanced equation represents the decomposition of water. Notice that oxygen gas is a diatomic element composed of 2 atoms of oxygen. Hydrogen is also a diatomic element composed of 2 atoms of Hydrogen. H₂O → 1. Balance the equation for the decomposition of water. Color white red Number of Pieces 12 6 2. Build the molecules of water and hydrogen you need for a complete reaction, and form water. Does your model confirm that you balanced your equation correctly? 3. Why does it not make sense to "balance" your equation as shown below? 1_H₂0_1_0+_2_H 6 H₂O x 0₂ + H₂ Using the Mole Ratio 1. Build 6 molecules of water. Break up the 6 molecules of water to make oxygen O2 and hydrogen gas H₂. How many molecules oxygen O2 and hydrogen H2 will be produced? 6 H₂O 0₂ H₂ 2 H2 2 H20 We can find how many oxygen and hydrogen are produced mathematically by multiplying the starting amount by the ratio provided in the balance chemical reaction. Notice from the balanced chemical reaction that there are 2 water molecules for every 1 oxygen and 2 hydrogen produced. Since there is a different ratio for each, we will need to find each separately. 6 H₂O x 102 2820 -=30₂ = 6 H₂
1. If you have 10 molecules of water, how many molecules of oxygen gas (02) will be produced? Show your calculation using the mole ratio. 2. If you have 10 molecules of water, how many molecules of hydrogen gas (H₂) will be produced? Show your calculation using the mole ratio. 3. If you have 100 molecules of water, how many molecules of oxygen gas (0₂) will be produced? Show your calculation using the mole ratio Since you know that the ratio of water to oxygen is always 2:1, you know that no matter what quantity of water you start with, you will always produce ½ as much oxygen. If you have 8 dozen molecules of water, you will get 4 dozen molecules of oxygen produced. If you have 8 moles of water, you will produce 4 moles of oxygen. The ratio in the chemical equation can be called the mole ratio, since the mole is a quantity used in chemistry. 4. If you start with 2 dozen water molecules, how many dozen molecules of O: will you produce? (notice how you do not multiply by 12). 5. If you start with 2 moles of water molecules, how many moles of molecules of oxygen (O₂) will you produce? (notice how you do not multiply by 6.02 x 1023) 1 6. If you start with 20 moles water, how many moles of hydrogen (H₂) will you produce? Show your calculations using the mole ratio.
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