Answer:
what is the product of the reaction?
What does it form?
I’m thinking that it is probably Antacid tablet’s neutralize stomach acid. Since it would be expected for a purple thing to be purple in all states of matter that’s not weird at all, the helium one just seems like a throw in like why is that a chemical property, water freezing at it’s freezing point is normal, the only one left is the tablet one.
Answer:
101.35 g
Explanation:
The balanced equation for the reaction is:
2KClO3 ----> 2KCl + 3O2
So 2 moles of KClO3 produces 3 moles of Oxygen
Using the molar masses:
245.09 g KClO3 produces 95.994 g of oxygen.
258.77 g produces 95.994 * 258.77 / 245.09 = 101.35 g (answer).
<span>Answer: 100 ml
</span>
<span>Explanation:
1) Convert 1.38 g of Fe₂S₃ into number of moles, n
</span>i) Formula: n = mass in grass / molar mass
<span>
ii) molar mass of </span><span>Fe₂S₃ =2 x 55.8 g/mol + 3 x 32.1 g/mol = 207.9 g/mol
</span>
iii) n = 1.38 g / 207.9 g/mol = 0.00664 moles of <span>Fe₂S₃
</span>
<span>2) Use the percent yield to calculate the theoretical amount:
</span>
<span>65% = 0.65 = actual yield/ theoretical yield =>
</span>theoretical yield = actual yield / 0.65 = 0.00664 moles / 0.65 = 0.010 mol <span>Fe₂S₃</span><span>
3) Chemical equation:
</span>
<span> 3 Na₂S(aq) + 2 FeCl₃(aq) → Fe₂S₃(s) + 6 NaCl(aq)
4) Stoichiometrical mole ratios:
</span>
<span>3 mol Na₂S : 2 mol FeCl₃ : 1 mol Fe₂S₃ : 6 mol NaCl
5) Proportionality:
</span>2moles FeCl₃ / 1 mol Fe₂S₃ = x / 0.010 mol Fe₂S₃
<span>
=> x = 0.020 mol FeCl₃
6) convert 0.020 mol to volume
</span>
<span>i) Molarity formula: M = n / V
</span>
<span>ii) V = n / M = 0.020 mol / 0.2 M = 0.1 liter = 100 ml
</span>
I'm pretty sure it would me decrease
