Answer:
48.27g Na
Explanation:
To start we need to balance the equation. The trick is to make sure both sides have equal amounts of each atom:
2Na + Cl2 --> 2NaCl
Now we can use sociometry
We have 75 g of Cl2, and for every 1 mole of Cl2, there are 70.9 grams:
Now we have moles of Cl2. To get to grams of Na, we need to first use mole to mole ratio:
From here we convert moles of Na into grams of Na
It's usually easier to just make one singular equation with all of these smaller equations.
The trick to sociometry is making sure your units cancel out until you only have the unit you want. If there are moles of Na in the numerator, there needs to be moles of Na in the denominator. If there are grams of Cl2 in the numerator, there needs to be grams of Cl2 in the denominator and so one and so on
Balanced equation:
4 FeS₂ + 11 O₂ --> 2 Fe₂O₃ + 8 SO₂
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Find the limiting reactant (the one that produces the least amount of product) :
(73.5 g FeS₂) * (1 mole FeS₂ / 119.975 g FeS₂) * (2 moles Fe₂O₃ / 4 moles FeS2) * (159.6882 g Fe₂O₃ / 1 mole Fe₂O₃)
= 48.9 g Fe₂O₃ …………. to 3 sig figs
(44 g O₂) * (1 mole O₂ / 31.9988 g O₂) * (2 moles Fe₂O₃ / 11 moles O₂) *
(159.6882 g Fe₂O₃ / 1 mole Fe₂O₃)
= 40 g Fe₂O₃ ………………. to 2 sig figs
O₂ is the limiting reactant and the theoretical yield is 44 g Fe₂O₃
Answer:
Number of moles = 0.51 mol
Explanation:
Given data:
Mass of CO₂ = 22.4 g
Number of moles = ?
Solution:
Number of moles of CO₂:
Number of moles = mass/molar mass
Molar mass of CO₂ = 44 g/mol
by putting values,
Number of moles = 22.4 g/ 44 g/mol
Number of moles = 0.51 mol
Answer:
2Cl- ⇒ Cl ↓2+ 2e
Explanation: sorry if this is not what you were looking for.
Fluorine.
Because:- Atoms want to become stable, for an atom to become stable, they need 8 valence electrons. Since Fluorine has 7 valence electrons, it only needs one more electron to become stable and have an octet. An octet is when an atom/element has 8 valence electrons. Since Fluorine will need to gain an electron, it will have a negative charge, and become an anion.
