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Virty [35]
3 years ago
9

Which subatomic particle helps identify an elements identify

Chemistry
1 answer:
Sindrei [870]3 years ago
8 0

Answer:

Protons

Explanation:

Protons are the subatomic particle that determines the identity of an element.

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Pressure gauge at the top of a vertical oil well registers 140 bars. The oil well is 6000 m deep and filled with natural gas dow
andreyandreev [35.5K]

Explanation:

(a)  The given data is as follows.

              Pressure on top (P_{o}) = 140 bar = 1.4 \times 10^{7} Pa       (as 1 bar = 10^{5})

              Temperature = 15^{o}C = (15 + 273) K = 288 K

         Density of gas = \frac{PM}{ZRT}

                \frac{dP}{dZ} = \rho \times g

               \frac{dP}{dZ} = \int \frac{PM}{ZRT}

                \int_{P_{o}}^{P_{1}} \frac{dP}{dZ} = \frac{Mg}{ZRT} \int_{0}^{4700} dZ

           ln (\frac{P_{1}}{P_{o}}) = \frac{18.9 \times 10^{-3} \times 9.81 \times 4700 m}{0.80 \times 8.314 J/mol K \times 288 K}

                              = 0.4548

                     P_{1} = P_{o} \times e^{0.4548}

                                 = 1.4 \times 10^{7} Pa \times 1.5797

                                 = 2.206 \times 10^{7} Pa

Hence, pressure at the natural gas-oil interface is 2.206 \times 10^{7} Pa.

(b)   At the bottom of the tank,

                 P_{2} = P_{1}  + \rho \times g \times h

                             = 2.206 \times 10^{7} Pa + 700 \times 9.81 \times (6000 - 4700)[/tex]

                             = 309.8 \times 10^{5} Pa

                             = 309.8 bar

Hence, at the bottom of the well at 15^{o}C pressure is 309.8 bar.

6 0
3 years ago
The endocrine system is made of which components?
AysviL [449]
Adrenal Glands
<span>Pancreas</span>
<span>Thyroid and Parathyroid Glands</span>
3 0
3 years ago
Scientists use _____ as chemical symbols.<br><br> dots<br> letters<br> shapes<br> lines
defon

Answer:

Letters

Explanation:

6 0
3 years ago
Read 2 more answers
Although si is an insulator then how does it behave as semiconductor upon heating
soldier1979 [14.2K]
A semiconductor's resistivity decreases with the increase in temperature.
More is the heat imparted to  it, it will behave more as an insulator.
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Which element most likely has the same number of valence electrons as silicon (Si)?
Hatshy [7]

Answer:

germanium (Ge)

Explanation:

both belong to the same group

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