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3 years ago

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Iron reacts with oxygen to produce iron(iii) oxide.4 fe(s) + 3 o2(g) → 2 fe2o3(s)if 6.4 moles of fe react with excess o2, how ma

ny moles of fe2o3 can be formed?a. 1.6 molb. 2.4 molc. 3.2 mold. 4.3 mole. 6.4 mol

1 answer:

sattari [20]3 years ago

4 0

3.2mol
hope it can help you

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How much heat is absorbed by 0.060 kg of copper when it is heated from 20.0°C to 80.0°C if the specific heat of copper is 385J/k

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Use the following table to answer the question. Strong acids Weak acids Weak bases Strong bases HBr CH3COOH NH3 NaOH HCl HF NH4O

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Answer: The salt which has the highest pH is $CH_3COONa$

Explanation: Salts are formed by the reaction of acid and base. General equation for the generation of salt is given by:

$HX+BOH\rightarrow BX+H_2O$

The given salts are formed from the reaction of acids and bases.

1) $K_2SO_4$

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2) $CuSO_4$

This is a salt which is formed by the reaction of weak base $(Cu(OH)_2)$ and strong acid $(H_2SO_4)$ . So, this salt is an acidic salt.

$H_2SO_4+Cu(OH)_2\rightarrow CuSO_4+2H_2O$

3) $NH_4Cl$

This is a salt which is formed by the reaction of weak base $(NH_3)$ and strong acid (HCl). So, this salt is an acidic salt.

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4) $CH_3COONa$

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10.5/100 = y/125

by cross multiplication

100y =1312.5
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4 years ago

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