(c) (1) What is meant by the term isotopes?相关知识点: 试题来源: 解析 Isotopes are variants of a particular chemical element which differ in neutron number. 同位素是指具有相同原子序数(即质子数相同)但中子数不同的同一元素的不同原子。由于质子数相同,同位素具有相同的化学性质,但由于中子数不同,...
5 (a) State what is meant by the specific heat capacity of a substance.[2](b) A student carries out an experiment to find the specific heat capacity of aluminium. He uses an electric heater and a thermometer, inserted into separate holes in an aluminium block.The following dat a are o...
This iswhat is meant bythinking in terms of the majority. 这就是照顾多数的观点. 互联网 I am not even certainwhat is meant byplacental fluid. 我甚至不确定“胎液”到底指的是什么. 互联网 First,what is meant byanguish? 首先, 痛苦是什么意思?
a成为一件艺术品是生活的目的。 Becomes an artware is the life goal.[translate] a随身携带某物 Carries something along with[translate] amy telephon? 我的telephon ?[translate] a3. What is meant by “equivalent value” in translation? 3. “当量值是什么意思”在翻译?[translate]...
“It is not just a planet, It is our home.”这是对地球在宇宙中地位的恰如其分的评价。地球的特殊性表现在( )(3) 图中A、B、C、D四地自转线速度的大小排列关系是 。[解析]第(1)题,读图,图中晨昏线与经线重合,该图表示的日期是3.21或9.23前后,即二分日。图中有0°经线,结合等份判断,此时,昏...
(a)1 evaporation of water from leaf / stem / plant;2 diffusion of water vapour;3 through stomata;4 down concentration gradient;any three - 1 mark each(b)1 temperature rise increases the rate of transpiration /evaporation / ORA;2 warm air can contain more water (vapour)/ ORA;3 increases...
(i) Explain what is meant by an ideal gas.[2](ii)Given po= atmospheric pressure Pm = pressure due to the mercury column T= temperature of the trapped gas n = number of moles of the trapped gas A = cross-sectional area of the tube Show that (P , D ) × 0.1 9 0= nRT[1](i...
aIt is necessary to define what is meant by diagnosis or troubleshooting because the termsare used differently in the literature. Sometimes diagnosis refers only to the process from identification of the symptom to the determinationof the fault. In other cases, especially when one speaks about ...
aIt is necessary to define what is meant by diagnosis or troubleshooting because the termsare used differently in the literature. Sometimesdiagnosis refers only to the process from identification of the symptom to the determinationof the fault. In other cases, especially when onespeaks about troublesh...
What is meant by thermal decomposition ? Give an example. View Solution (a) What is meant by a substitution reaction ? Give an example (with equation ) of the substitution reaction of an alkane. (b) How is soap made? Write a word equation involved in soap making. ...