Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The condition for the conservation of momentum at the interface under
  phase transitions of solutions   Abstract. The present work considers a change in the momentum under the
transfer of a solution through the interface. It is shown that pressure related
to the partial volumes of components arises in a solution under diffusion. As a
result, the distribution of the concentration of solution components differs
qualitatively from the known solutions. In contrast to the description of
one-dimensional interphase mass transfer using the convective diffusion
problem, the proposed model provides the stationary exponential distribution of
components in both phases. The model describes component segregation by the
interface, observed in the experiments.

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The categories of this paper are: astro-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-th
29
The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: hep-ex
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The categories of this paper are: stat
32
The categories of this paper are: atom-ph
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: eess
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The categories of this paper are: math-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
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The categories of this paper are: gr-qc
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The categories of this paper are: nlin