1. What are the normal freezing points and boiling points of the following solution? (a)21. 0g NnCl in 135mL. of water. (b)15. 4g of urea in 66. 7mL of water. 相关知识点: 试题来源: 解析 Solution (a) c(NaCl)=(21.0g/58.5g⋅mol^(-1))/(0.135L)=2.65gmol⋅L^(-1) ...
What are the boiling points of the homologous series of alkanes? Which chemical element has the highest boiling point? What is the effect of molecular mass on boiling point? What is the melting point of actinium in Fahrenheit? What chemical element has the lowest boiling point?
What are bromine's melting and boiling points? What is the melting point of graphene? Does stereochemistry affect melting point? What is the melting point of mercury? What is the melting point of helium? What is the melting point of californium in Fahrenheit?
What is the boiling point of a solution containing 22.5 g of NaCl in 150 mL of water? If 0.150 mole of a nonvolatile, nonelectrolyte solute is dissolved in 800 grams of water, what are the ideal \ (a) melting and (b) boi...
What is the freezing point of an aqueous solution that boils at 106.8 C? You may assume that the boiling and freezing points of water are 100 C and 0 C, respectively. What is the boiling point of a solution that c...
The reclassification of marijuana would remove a huge tax burden from the struggling industry. Matt WhittakerDec. 20, 2024 10 Best Investments for 2025 Heading into 2025, cryptocurrencies, AI stocks and pharmaceutical stocks are among those showing promise. ...
Section 9—Physical and Chemical Properties:Lists the chemical’s key characteristics, including appearance, odor, pH, boiling/melting points, flammability, vapor pressure, and solubility. Section 10—Stability and Reactivity:Details the chemical’s stability, hazardous reactions, conditions to avoid, inc...
Mixturesdo not have fixed precise melting and boiling points (whichelementsandcompoundsdo have), but instead mixtures melt / freeze and boil / condense over a range of temperatures according to the physical properties of the different constituents of the mixture. ...
Both systems use the freezing and boiling points of water as their guide.(2) E. The most common kind of thermometer is made with mercury(水银)inside a clear glass tube.As mercury (or any other liquid ) becomes hot,it expands.As it gets colder,it contracts(收缩)....
英语不及格 因为我爱国 使阴、阳离子结合成化合物的静电作用。离子键 离子键是由电子转移（失去电子者为阳离子，获得电子者为阴离子）形成的。即正离子和负离子之间由于静电引力所形成的化学键。离子既可以是单离子，如Na+、CL-；也可以由原子团形成；如SO4 2-，NO3-等。离子键的作用力强，无饱和性...