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2 years ago

Which is the correct formula for the compound formed between beryllium and nitrogen?

Chemistry

1 answer:

V125BC [204]2 years ago

5 0

Answer:

Be3N2

Explanation:

u cross multiply with their subscripts

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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

What property do all of the group 18 elements have that make them stand out from other elements?

matrenka [14]

They are very stable (not reactive).

This is because their outer shell has a total of 8 valence electrons. All elements strive to get towards a full outer shell, but since these elements already have a full outer shell, they are fairly unreactive.

5 0

3 years ago

How does soil form bare rock???

RSB [31]

Weathering and erosion produce ever smaller rock particles which,

when mixed with dust and decayed organic matter over time ,

result in different types of soil .

[hope this helps]

3 0

3 years ago

What is the overall energy transformation in a coal-fired power plant?.

polet [3.4K]

Answer: When coal is burned, chemical potential energy is transformed into thermal energy, light energy, and sound energy. Only the thermal energy is used for electricity production. Light and sound energy dissipate into the environment, immediately reducing efficiency.

Hope this helps.

7 0

2 years ago

Italian dressing contains olive oil and vinegar, which will separate out from each other if left to sit. This makes the dressing

OleMash [197]

Italian salad dressing would be a suspension

6 0

2 years ago