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3 years ago

Use the equation 2cu+o2=2cuo to find how many miles of copper react to form 3.64 mil cuo

Chemistry

2 answers:

Firlakuza [10]3 years ago

8 0

<h3><u>Answer;</u></h3>

3.64 moles

<h3><u>Explanation;</u></h3>

From the equation;

2Cu + O2 → 2CuO

Mole ratio of Cu : CuO = 2: 2 equivalent to 1: 1

Moles of CuO = 3.64 Moles

Therefore;

moles of Cu will be ;

3.64 × 1 = 3.64 moles

Moles of Cu = <u>3.64 moles </u>

vaieri [72.5K]3 years ago

3 0

Complete question:

Use the equation 2Cu+O2 →2CuO, to find how many grams of copper react to produce 3.64 mol CuO.

Answer:

grams of Cu = 231.14 grams

If it is the number of moles

since both Cu and CuO exist in the reaction as 2 mole each ,That means 3.64 moles of CuO will need 3.64 moles of Cu to react.

Explanation:

Write and balance the equation of the reactions

2Cu+O2 →2CuO

The equation is balanced

Atomic mass of cu = 63.5 g/mol

mass of 2Cu in the reaction = 127 grams

Molar mass of Cuo = 63.5 + 16 = 79.5

The mass of 2Cuo in the reaction = 2 × 79.5 = 159 grams

number of moles = mass/molar mass

we need to convert 3.64 moles to mass(grams)

3.64 = mass/79.5

mass = 3.64 × 79.5

mass of copper oxide = 289.38

grams

Since 127 grams of copper give 159 grams of Cuo

? grams of copper will give 289.38 grams of Cuo

cross multiply

grams of Cu = 289.38 × 127/159

grams of Cu = 36751.26

/159

grams of Cu = 231.14 grams

If it is the number of moles

since both Cu and CuO exist in the reaction as 2 mole each ,That means 3.64 moles of CuO will need 3.64 moles of Cu to react.

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