A. Concentration B. Density C. Molarity D. Molality 相关知识点: 试题来源: 解析 A。“Concentration”指浓度,即物质在给定体积溶液中的量。“Density”是密度;“Molarity”是物质的量浓度;“Molality”是质量摩尔浓度。本题问的是溶液中物质的量,所以是浓度,选 A。
Become a Study.com member to unlock this answer!Create your account View this answer The renal threshold of a substance refers tothe plasma concentration of a substance at which active transport stops and increased amounts are... See full answer below. ...
"queen substance" produced by queen honey bees. aphids, which are particularly vulnerable to predators because of their gregarious habits and sedentary nature, secrete an alarm pheromone when attacked that causes nearby aphids to respond by moving away. what does the passage mainly discuss? a.how ...
Genetic alteration refers to altering what substance found in the nucleus of cells? Genetic Alteration: A litany of processes may alter the genes present in any cell: exposure to certain environmental chemicals, ultraviolet radiation, and errors that occur during the replication p...
substance is transported from higher concentration to lower concentration C. Increasing of temperature can promote it. D. It needs not any protein. 查看完整题目与答案 【单选题】The transport amount of simple diffusion depends on A. channel supplied B. carrier supplied C. concentration differen...
The invention relates to an intermitter for Wells wherein.the well is to be produced intermittently and is of a particular type where the fluid pressure is... 被引量: 0发表: 0年 METHOD AND DEVICE FOR DETERMINING THE CONCENTRATION OF A SUBSTANCE OR A SUBSTANCE IN A FLUID MEDIUM Method and...
a- For each polymeric material containing Bromine, Chlorine or Sb2O3 in concentration greater than 0.09% of the homogeneous material weight, declare "Contains Br, Cl or Sb2O3", and declare the substance into own row as other substances. -为包含溴、氯或者Sb2O3的每聚合物材料在集中大于0.09...
Hemp fibers is refers to the from all kinds of hemp plant is achieved in the floorboard of the fiber. Various yarns, including the leaf bumdles fiber and leaf fiber. Hemp fibers bast fibre and leaf fibre from all kinds of hemp plant have fiber, including annual or perennial herb ...
aThere are concentration boundary layers on both sides of the membrane, and these may contribute significantly to the overall resistance if the membrane is thinner than the boundary layers. 正在翻译,请等待... [translate] abidders shall separate clearly import duty, customs fee and value added ...
substance is transported from higher concentration to lower concentration C. Increasing of temperature can promote it. D. It needs not any protein. 查看完整题目与答案 【单选题】The transport amount of simple diffusion depends on A. channel supplied B. carrier supplied C. concentration ...