What is the maximum number of moles of NaCl that can be produced from the reaction of 5.6 mol Na and 4.7 mol CI2?

Chemistry

1 answer:

Gre4nikov [31]2 years ago

3 0

Answer:

Limiting - Na Excess - Cl2

Explanation:

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How can I balance this equation? ____ KClO3 ---> ____ KCl + ____ O2

tensa zangetsu [6.8K]

__ KClO₃ → __ KCl + __ O₂

Left Side:
1 K
1 Cl
3 O

Right Side:
1 K
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Since the least common multiple of 3 and 2 is 6, we need to multiply the compound with 2 oxygen by 3 and the compound with 3 oxygen by 2.

This gives us 2KClO₃ → __ KCl + 3O₂.

However, this equation is still not balanced.

Left Side:
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Right Side:
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6 O

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2 years ago

Modern pennies are composed of zinc coated with copper. A student determines the mass of a penny to be 2.483 g and then makes se

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Answer:

97.1%

Explanation:

Using the ideal gas equation, the number of moles of hydrogen gas produced can be calculated from information provided about the volume of gas evolved at a given temperature and pressure.

The stoichiometry of the reaction is now used to obtain the number of moles of Zn that will produce a given number of moles of hydrogen from the balanced reaction equation as shown. This gives us the number of moles of zinc reacted hence the mass of zinc in the coin since it is assumed that all the zinc reacts.

This is now used to calculate the mass percentage of Zn as shown.

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