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Neko [114]
3 years ago
10

Which one of the following reactions is NOT balanced?

Chemistry
1 answer:
Korolek [52]3 years ago
6 0

Answer:

co+ o2+ 2co2 is not balanced reaction

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Consider the reaction 4FeS2 + 11O2 → 2Fe2O3 + 8SO2. If 8 moles of FeS2 react with 15 moles of O2, what is the limiting reactant?
omeli [17]

Answer:

O2

Explanation:

for find the limiting reactant you must calculate the moles of the reactants from the amount that you have and from the MM:

MM FeS2 = 120n  = 26.2g / 120g/mol = 0,218 mol

MM O2  = 32n = 5,44g/32g/mol = 0,17 mol

The limiting reactant is  

O2

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What causes the change within every twenty four hours from day to night on Earth?
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3 years ago
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For the equilibrium that exists in an aqueous solution of nitrous acid (HNO2, a weak acid), the equilibrium constant expression
alekssr [168]

Answer: For the equilibrium that exists in an aqueous solution of nitrous acid (HNO2, a weak acid), the equilibrium constant expression is K = [ H+] [NO2-] / [HNO2].

Explanation:

An expression that depicts the ratio of products and reactants raised to the power of their coefficients at equilibrium is called equilibrium constant.

An equilibrium constant is denoted by the symbol 'K'.

For example, the dissociation of nitrous acid in aqueous solution is as follows.

HNO_{2} \rightleftharpoons H^{+} + NO^{-}_{2}

Hence, its expression for equilibrium constant is as follows.

K = \frac{[H^{+}][NO^{-}_{2}]}{[HNO_{2}]}

Thus, we can conclude that for the equilibrium that exists in an aqueous solution of nitrous acid (HNO2, a weak acid), the equilibrium constant expression is K = [ H+] [NO2-] / [HNO2].

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3 years ago
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