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3 years ago

Which of the following correctly describes voltage difference?

Chemistry

1 answer:

7nadin3 [17]3 years ago

7 0

Voltage difference is the push that causes charges to flow from high to low areas.

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For the reaction C6H6 + ? O2 → ? CO2+? H2O , what is the maximum amount of CO2 which could be formed from 6.59 g of C6H6 and 6.6

Likurg_2 [28]

Answer: 3.52 grams

Explanation:

$2C_6H_6+15O_2\rightarrow 12CO_2+6H_2O$

Given moles:

moles of oxygen = 6.62

moles of $C_6H_6=\frac{\text {given mass}}{\text {molar mas}}=\frac{6.59g}{78g/mol}=0.08moles$

According to stoichiometry:

2 moles of benzene reacts with = 15 moles of oxygen

Thus 0.08 moles of benzene will react with = $\frac{15}{2}\times 0.08=0.6$ moles of oxygen

Thus benzene is the limiting reagent as it limits the formation of products and oxygen is the excess reagent.

As 2 moles of benzene produce = 12 moles of carbon dioxide

0.08 mole of benzene will produce = $\frac{12}{2}\times 0.08=0.48moles$ of carbon dioxide

Mass of carbon dioxide= $moles\times {\text {Molar mass}}=0.48\times 44=3.52g$

Thus 3.52 g of carbon dioxide are produced.

4 0

4 years ago

Hydrogen is 99% 1H, 0.8% 2H, and 0.2% 3H. Calculate its average atomic mass.

AlekseyPX

The average atomic mass of hydrogen (99% H-1, 0.8% H-2, and 0.2% H-3) is 1.012 amu.

The average atomic mass of hydrogen can be calculated with the following equation:

$A = m_{H-1}\%_{H-1} + m_{H-2}\%_{H-2} + m_{H-3}\%_{H-3}$

Where:

$m_{H-1}$ : is the mass of protium (H-1) = 1

$m_{H-2}$ : is the mass of deuterium (H-2) = 2

$m_{H-3}$ : is the mass of tritium (H-3) = 3

$\%_{H-1}$ : is the abundance percent of H-1 = 99%

$\%_{H-2}$ : is the abundance percent of H-2 = 0.8%

$\%_{H-3}$ : is the abundance percent of H-3 = 0.2%

The average atomic mass is:

$A = 1*99\% + 2*0.8\% + 3*0.2\%$

Changing all the percent values into decimal ones, we have:

$A = 0.99 + 2*0.008 + 3*0.002 = 1.012$

Therefore, the average atomic mass of hydrogen is 1.012 amu.

Learn more about average atomic mass here brainly.com/question/8575403?referrer=searchResults

I hope it helps you!

6 0

2 years ago

When the magnets are misaligned, I think the magnet on the right will

mezya [45]

Answer:

INTRODUCTION

Explanation:

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3 years ago

What statement best describes the components of a mixture

Ray Of Light [21]

Answer: the statement that would best describe the components of a mixture is ho2

Explanation:

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3 years ago

The picture (below) shows the formula for ___________.

Stella [2.4K]

Answer:

Small change

Explanation:

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3 years ago