水性岩液体的密度 岩液体的密度
1Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109-1063, USA.
概括
在酸溶液中溶解的水具有一致的部分摩尔体积,独立于化的组成或水度. 这一发现影响了对岩腔动力学和地质过程中的矿物行为的理解.
科学领域:
- 地质化学 地质化学
- 物理化学 物理化学
- 石化学 石化学是一门学科.
背景情况:
- 了解水在酸盐融中的行为对于解释地质过程至关重要.
- 以前的研究表明,水对融特性的影响有所变化.
研究的目的:
- 为了准确地确定水性酸盐溶液中水的部分摩尔体积.
- 研究水对融化密度,热膨胀率和压缩能力的影响.
- 评估这些特性对岩动态的影响.
主要方法:
- 在受控温度和压力下精确测量酸盐融的密度.
- 分析水度,物种化和融化成分.
主要成果:
- 在酸溶液中,水的部分摩尔体积 (V H2O) 是恒定的 (22.9 ± 0.6 cm3/mol 在 1000°C 和 1 bar 时),不论溶液的组成,含水量或物种.
- 量化了水的部分摩尔热膨胀性和压缩性.
- 岩中的1重%H2O相当于~400°C的温度升高或~500MPa的压力降低.
结论:
- 溶解的水显著改变了融的特性,具有可预测的体积效应.
- 这些发现支持了在富含铁的融物中沉没的青酸的生存能力,并突出了水性岩腔中构成对流的作用.
相关概念视频
Density
Density is an important characteristic of substances, crucial in determining whether an object sinks or floats in a fluid. Its SI unit is kg/m3, and its cgs unit is g/cm3. The density of an object helps in identifying its composition, and also reveals information about the phase of the matter and its substructure. The densities of liquids and solids are roughly comparable, consistent with the fact that their atoms are in close contact. However, gases have much lower densities than liquids and...
Density and Archimedes' Principle
When a lump of clay is dropped into water, it sinks. But if the same lump of clay is molded into the shape of a boat, it starts to float. Because of its shape, the clay boat displaces more water than the lump and experiences a greater buoyant force, even though its mass is the same. The same holds true for steel ships. The average density of an object majorly determines if the object will float. If an object's average density is less than that of the surrounding fluid, it will float. The reason...
Crystal Density
The crystal lattice structure of a material allows us to determine how many molecules exist in its unit cell. With this information, alongside the unit-cell parameters - three distance parameters (a, b, c) and three angular parameters (α, β, γ).Density (ρ) = (Z × M) / (a × b × c × NA)where:Z is the number of formula units per unit cellM is the molar mass of the substancea, b, and c are the edge lengths of the unit cellNA is Avogadro’s numberFor a simple cubic lattice, atoms are located only at...
Body Water Content and Fluid Compartments
Life's biochemical processes occur within aqueous solutions. Solutes are substances that are dissolved within these solutions. The human body contains a variety of solutes, which can differ across various body parts. These can encompass proteins—such as those responsible for clotting and carbohydrate transport—as well as electrolytes. In medicine, an electrolyte is often described as a mineral ion derived from a salt possessing an electric charge. Examples include sodium ions (Na+) and chloride...
Specific Gravity of Aggregate
Aggregates typically contain pores, which can be either permeable or impermeable. Considering the pores in the aggregates, the specific gravity of aggregates is defined in three different forms, namely, bulk or gross specific gravity, apparent specific gravity, and absolute specific gravity.
Bulk or gross specific gravity is calculated by taking the ratio of the mass of aggregates in the saturated surface-dry state to the total volume that includes both the solids and the voids within the...
Bulk or gross specific gravity is calculated by taking the ratio of the mass of aggregates in the saturated surface-dry state to the total volume that includes both the solids and the voids within the...
Density, Specific Weight, Specific Gravity and Compressibility of Fluid
Density, specific weight, specific gravity, and compressibility are fundamental properties of fluids. Density is the mass per unit volume, characterizing the mass of a fluid system. It influences buoyancy, pressure, flow dynamics, viscosity, thermal conductivity, and sound propagation. For instance, in pipeline design, accurate density measurements ensure that the pipeline can handle the fluid's mass.
Specific weight represents the weight per unit volume and is calculated by multiplying density...
Specific weight represents the weight per unit volume and is calculated by multiplying density...


