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Setler79 [48]
3 years ago
5

Ni2+(aq) + Sn(s) = Ni(s) + Sn2+(aq)

Chemistry
1 answer:
RideAnS [48]3 years ago
4 0
The correct answer is C because the agents on the products side and cause the reverse reaction to be spontaneous while the agents on the reactants side are weaker and therefore the forward reaction is non-spontaneous

Hope this helps 
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A fine of 50.0 mL of 0.0900 M CaCl2 reacts with excess sodium carbonate to give 0.366 g of calcium carbonate precipitate. What i
In-s [12.5K]

Answer:

81.26% is the percent yield

Explanation:

Based on the reaction:

CaCl₂ + Na₂CO₃ → 2NaCl + CaCO₃

<em>Where 1 mole of CaCl₂ in excess of sodium carbonate produces 1 mole of calcium carbonate.</em>

<em />

To solve this question we must find the moles of CaCl2 added = Moles CaCO₃ produced (Theoretical yield). The percent yield is:

Actual yield (0.366g) / Theoretical yield * 100

<em>Moles CaCl₂ = Moles CaCO₃:</em>

0.0500L * (0.0900moles / L) = 0.00450 moles of CaCO₃

<em>Theoretical mass -Molar mass CaCO₃ = 100.09g/mol-:</em>

0.00450 moles of CaCO₃ * (100.09g / mol) = 0.450g of CaCO₃

Percent yield = 0.366g / 0.450g * 100

81.26% is the percent yield

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3 years ago
What phase of matter is oxygen at room temperature
Vedmedyk [2.9K]
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good luck mate :)
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