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inna [77]
2 years ago
5

Using the balanced equation for the combustion of ethane: 2C2H6 + 7O2 → 4CO2 + 6H2O, how many moles of O2 needed to produce 12 m

oles of H2O?
Chemistry
1 answer:
pickupchik [31]2 years ago
3 0

Answer:

14 moles of oxygen needed to produce 12 moles of H2O.

Explanation:

We are given that balance eqaution

2C_2H_6+7O_2\rightarrow 4CO_2+6H_2O

We have to find number of moles of O2 needed  to produce 12 moles of H2O.

From given equation

We can see that

6 moles of   H2O produced by Oxygen =7 moles

1 mole of   H2O produced by Oxygen=\frac{7}{6}moles

12 moles of H2O produced by Oxygen=\frac{7}{6}\times 12moles

12 moles of H2O produced by Oxygen=7\times 2moles

12 moles of H2O produced by Oxygen=14 moles

Hence, 14 moles of oxygen needed to produce 12 moles of H2O.

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umka21 [38]

Answer:

957.7mL

Explanation:

Using the formula below;

CaVa = CbVb

Where;

Ca = concentration of acid (M)

Va = volume of acid (mL)

Cb = concentration of base (M)

Vb = volume of base (mL)

According to the information provided in this question:

Ca = 0.166 M

Cb = 0.013 M

Va = 75mL

Vb = ?

Using CaVa = CbVb

0.166 × 75 = 0.013 × Vb

12.45 = 0.013Vb

Vb =12.45/0.013

Vb = 957.7mL

6 0
2 years ago
Asolution has a pH of 8. Which best describes the solution?
alekssr [168]

Answer:

a weak base

Explanation:

pH levels:

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6 0
3 years ago
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The nucleus of an atom stays together only because the repulsive forces, called
Ahat [919]

Answer:

Electrostatic

Explanation:

The forces that are overcome are the repulsive electrostatic forces between the protons (all charged positively).

7 0
3 years ago
How can we reduce our carbon footprint
asambeis [7]

Answer:

reduce using fossil fuels

Explanation:

fossil fuels are increasing our carbon footprint and so are green house gasses but we can't have too little greenhouse gasses or too much greenhouse gasses

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Answer:

The kinds of intermolecular forces that are present in each element Kr-Kr.

Explanation:

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So, Kr gas does not form molecules.

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Hence, the intermolecular forces that are present between Kr-Kr atoms is London dispersion forces.

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