6 A liquid has a volume of 100 cm3 and a mass of 85g.The density of water is 1.0g/cm3How does the density of the liquid compare with the density of water? B A Its density is higher than that of water. B Its density is lower than that of water. C Its density is the same a...
3 In this experiment you will determine the density of water.(a)(i)Set up the apparatus as shown in Fig. 3.1. The pointers A and B should be attached to each end of the spring. The pointer A should also be attached to the paper clip The pointer B should be attached to the mass ...
a clean/contaminated water supply 洁净的 / 受污染的水源 来自牛津词典 2. to improve the water supply to rural villages 改善乡村供水系统 来自牛津词典 3. The town is without electricity and the water supply has been cut off. 镇上已停水断电。 来自柯林斯高阶英语词典 4. The train stopped to ge...
Water quality has also improved. The density of ammonia nitrogen dropped to 2.62 milligram per liter of water, down 51.5 percent compared with the previous year, the report said. A total of 92 percent of the city's wastewater was treated last year, according to the report. The city used m...
完成B 句,使其与 A 句意思相同或相近。(每空一词) A.If a substance has a higher density say 5 000 kg/m 3 it will not float on water. B.If a substance has a higher density ___ ___ 5 000 kg/m 3
2 Density of water ___kilograms per cubic meter.( )A. measuresB. is measuredC. measures inD. is measured in 3【题目】Density of waterkilograms percubic meter . (A.measuresB. is measuredC. measures inD. is measured in 4Density of water ___kilograms per cube meter.A.measures B....
2 (a) A student has an irregularly shaped piece of metal, a beaker of water and a measuring cylinder, as shown in Fig. 2.1.measuring cylinder water piece of metal Fig.2.1Describe how the student can accurately determine the volume of the piece of metal using the equipment provided.[4](...
Answer to: A 100 grams mass of a substance has a volume of 150 cm^3. Calculate the relative density of the substance. Density of water is \rho_w =...
a所以叫做狂欢节 Therefore named carnival[translate] a在干嘛阿 Is doing Arab League[translate] aadds to those the structure of water, whether it is low density water induced by kosmotropic effects 增加到那些水结构,它是否是kosmotropic作用导致的低密度水[translate]...
24. Most substance contract when they freeze so that the density of a substance’s solid is higher than the density of its liquid. 大多数物质遇冷收缩,所以他们的密度在固态时高于液态。 25. The mechanism by which brain cells store memories is not clearly understood. ...