Answer:
d.) granulated
Because the granulated sugar has a greater surface area.
Answer:
V = 15.2 L
Explanation:
STP means that T = 273 K and P = 1 atm.
We use the<em> PV=nRT equation</em> to <u>convert the given liters of oxygen to moles</u>:
- 1 atm * 7.6 L = n * 0.082 atm·L·mol⁻¹·K⁻¹ * 273 K
Now we<u> convert O₂ moles to H₂O moles</u>, using the <em>stoichiometric coefficients</em> of the equation:
- 0.340 mol O₂ * = 0.68 mol H₂O
Finally we use the PV=nRT equation once again to<u> convert 0.68 moles of H₂O to liters</u>:
- 1 atm * V = 0.68 * 0.082 atm·L·mol⁻¹·K⁻¹ * 273 K
It is B because you can’t really makes any guesses together
The mass (in grams) of iron, Fe that can be made from 21.5 g of Fe₂O₃ is 15.04 g
We'll begin by writing the balanced equation for the reaction. This is given below:
2Fe₂O₃ -> 4Fe + 3O₂
- Molar mass of Fe₂O₃ = 159.7 g/mol
- Mass of Fe₂O₃ from the balanced equation = 2 × 159.7 = 319.4 g
- Molar mass of Fe = 55.85 g/mol
- Mass of Fe from the balanced equation = 4 × 55.85 = 223.4 g
From the balanced equation above,
319.4 g of Fe₂O₃ decomposed to produce 223.4 g of Fe
<h3>How to determine the mass of iron, Fe produced</h3>
From the balanced equation above,
319.4 g of Fe₂O₃ decomposed to produce 223.4 g of Fe
Therefore,
21.5 g of Fe₂O₃ will decompose to produce = (21.5 × 223.4) / 319.4 = 15.04 g of Fe
Thus, 15.04 g of Fe were produced.
Learn more about stoichiometry:
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