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TEA [102]
3 years ago
13

Samples of four group 18 elements,antimony, arsenic,bismuth and phosphorus are in the gaseous phase. An atom in the ground state

of which element requires the least amount of energy to remove its loosely held electron
Chemistry
1 answer:
Sidana [21]3 years ago
8 0
None of these are in group 18
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im pretty sure its b. sand and iron

ik that magnetism easily separates iron

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The ____________ is inversely proportional to the wavelength and reported in reciprocal centimeters (cm−1). A technique used for
san4es73 [151]

Answer:Please see below in the explanation column for answers

Explanation:

-The WAVENUMBER____________ is inversely proportional to the wavelength and reported in reciprocal centimeters (cm−1).

- A technique used for measuring the molecular weight and determining the molecular formula of an organic molecule is __MASS SPECTOMETRY__________ .

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3 0
3 years ago
A 10-kg object is pushed across a rough surface. It begins at rest and accelerates to a speed of 4 m/s in a distance of 5m. Whic
Lynna [10]

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C) The object accelerates across the surface.

Explanation:

4 0
4 years ago
Sort the steps in the scientific method.
saw5 [17]

Answer:

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5 0
3 years ago
The pre-exponential constant and activation energy for the diffusion of iron in cobalt are 1.7 x 10-5 m2/s and 273,300 J/mol, re
Kitty [74]

<u>Answer:</u> The temperature of the system will be 1622 K

<u>Explanation:</u>

The equation relating the pre-exponential factor and activation energy follows:

\log D=\log D_o-\frac{E_a}{2.303RT}

where,

D = diffusion coefficient = 2.7\times 10^{-14}m^2/s

D_o = pre-exponential constant = 1.7\times 10^{-5}m^2/s

E_a = activation energy of iron in cobalt = 273,300 J/mol

R = Gas constant = 8.314 J/mol.K

T = temperature = ?

Putting values in above equation, we get:

\log (2.7\times 10^{-14})=\log (1.7\times 10^{-5})-\frac{273,300}{2.303\times 8.314\times T}\\\\T=1622K

Hence, the temperature of the system will be 1622 K

8 0
3 years ago
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