chemistry comic strip week 4
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- OMG! Drew, can you show me how to Solve the Formula Mass of a Compound?
- Sure, Brooke! Can I ask why you're asking?
- Five Minutes before a quiz...
- Well, I was right in the middle of studying last night but I dozed off. When I woke up I only had 10 mins to get here.
- Oh, that's okay! We've all been there. Here I'll show you how it's done on my phone
- First thing you need to do is just turn the given problem into a word equation. Similar to what I did in here.
- Magnesium reacts with nitrogen gas to produce Magnesium nitride.Step 1: Word EquationMagnesium + Nitrogen Gas => Magnesium Nitride
- As you can see here, only Nitrogen has a subscript of 2. This is because it's a diatomic substance. For the product side, the chemical formula for Magnesium Nitride is Mg3N2
- Step 2: Chemical EquationMg + N2 => Mg3N2
- For the last step, we can balance out the equation by adding a coefficient where it is needed.
- Step 3: Balance3Mg + N2 => Mg3N2
- How can we make sure that it's balanced?
- Okay, I get now. Thank you so much, Drew! Come on, The quiz is about to start.
- If the number of atoms per element is equal on the reactant and product side, then is already balanced.
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