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2 years ago

Look at the following balanced equation. How many atoms of oxygen (O) are present on the reactant side of the equation?

1 answer:

4 0

There are 6 atoms of oxygen on the reactant side of the following equation: 2Fe2O3 + 3C → 4Fe + 3CO2. Details about atoms can be found below.

<h3>How to find number of atoms?</h3>

The number of atoms of an element in a balanced equation is the amount of that element involved in the reaction.

According to this question, Iron oxide reacts with carbon to produce iron and carbon dioxide as follows:

2Fe2O3 + 3C → 4Fe + 3CO2

In this reaction, 2 × 3 atoms = 6 atoms of oxygen are present on the reactant side of the equation.

Learn more about number of atoms at: brainly.com/question/8834373

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Determine the minimum work required by an air compressor. At the inlet the conditions are 150 kg/min, 125 kPa and 33 °C. At the

Firdavs [7]

Explanation:

The given data is as follows.

MW = 29 g/mol, $C_{p}$ = 3.5 R

Formula to calculate minimum amount of work is as follows.

$W_{s} = C_{p}T_{1}[(\frac{P_{2}}{P_{1}})^{\frac{R}{C_{p}}} - 1]$

= $3.5 \times 8.314 J/k mol \times 306 \times [(\frac{550}{125})^{\frac{1}{3.5}} - 1]$

= 4.692 kJ/mol

Therefore, total work done will be calculated as follows.

Total work done = $m \times W_{s}$

Since, m = $\frac{150 \times 10^{3}g/min}{29}$ . Therefore, putting these values into the above formula as follows.

Total work done = $m \times W_{s}$

= $\frac{150 \times 10^{3}g/min}{29} \times 4.692 kJ/min$

= 24268.96 kJ/min

It is known that 1 kJ/min = 0.0166 kW. Hence, convert 24268.96 kJ/min into kW as follows.

$24268.96 kJ/min \times \frac{0.0166 kW}{1 kJ/min}$

= 402.86 kW

Thus, we can conclude that the minimum work required by an air compressor is 402.86 kW.

6 0

3 years ago

Help help help help help<br> What is an action your citizens can take to prevent water waste?

Ilia_Sergeevich [38]

Shorter showers, hand washing dishes, rewearing clothing if it isn’t too dirty, not letting the sink run while brushing teeth, eco friendly toilet.

5 0

2 years ago

Ways to reduce your carbon footprint.

sergejj [24]

Answer:

Avoid driving as much as you can
Avoid plastic in general (Plastic is usually not recycled, despite what people say. It ends up in landfills, the ocean, or it is burned)
Don't buy fast fashion (Clothes that are made in bulk by factories usually in Bangladesh. They are trendy but bad for the environment. Instead, shop at thrift stores.)
Don't waste food! Stop throwing out those leftovers, and make sure you eat everything on your plate.
Try to switch to renewable energy. (Use solar panels or find lights that conserve energy. Also, these options most likely cost less :)
Try to cut back on your meat intake. (I am a pescatarian who loves meat. I started this diet in 4th or 5th grade because it was a dare. I know, it was a crazy dare, but hey I don't back down! It's been about 5 years now and I'm still going strong. If me - a meat lover - can do it, you can to :)

5 0

3 years ago

How is Oxygen -18 different from oxygen -16?

STatiana [176]

Answer:The only one difference is that ozone is made up of three oxygen atoms, while the stuff we breathe is made up of only two atoms.

Explanation:

8 0

3 years ago

What is the pH of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 M? Show your calculation.

Nastasia [14]

Answer:

9.00

Explanation:

Data:

[H⁺] = 1.0 × 10⁻⁹ mol·L⁻¹

Calculation:

pH = -log[H⁺] = -log(1.0 × 10⁻⁹) = -log(1.0) - log(10⁻⁹) = -0.00 - (-9) = -0.00 + 9 = 9.00

7 0

2 years ago