一道全英文的化学题One of the species in the chemical indicator HIn􀀁 exhibits a yellow colour.If acid is added,the indicator turns red.Which of the following is correct?Red YellowA.In2-􀀁 H2InB.In2-􀀁 HIn-􀀁C.

一道全英文的化学题One of the species in the chemical indicator HIn􀀁 exhibits a yellow colour.If acid is added,the indicator turns red.Which of the following is correct?Red YellowA.In2-􀀁 H2InB.In2-􀀁 HIn-􀀁C. 又一道英文化学题..Which one of the following is not the same number as the rest?A.The number of molecules in 4 moles of CO2.B.The number of hydrogen atoms in 2 moles of H2O.C.The number of chloride ions in 4 moles of CaCl2.D.The number of hyf 一道头疼的化学题? 一道纠结的化学题 一道有关pka和ph的英语化学题A weak acid is titrated with a strong base and during the titration the pH is plotted.On studying the titration pH vs volume added curve it is found that one third of the way to the equivalence point the pH was 英文谚语“the tools of one's 一道英文版的化学题 some gas is collected over water at 20.0℃.the level of water inside and outside the gas-collection bottle are the same .the partral pressure of hydrogen is 742.5 torrwhat is the barometric pressure at the time the gas is F.T.ISLAND the one的歌词貌似是全英文滴好好听...想知道歌词! 这是一道英文数学题.厉害的来,The sides of a square are X feet long.Write an expression that represents the area of the square in square feet if the lenght of the side of the square is changed to one less than three times the lenght of the 求一道英文化学题的翻译The action of concentrated H2SO4 on urea, (H2N)2CO, results in the production of a white crystalline solid X of formula H3NO3S. This is a monobasic acid. On treatment with sodium nitrite and dilute hydrochloric acid a 一道英文的数学应用题~~~~~~帮帮忙阿 看不懂题目是这样的：the reciprocal of one third of a number decreased by one third of the reciprocal of the number is 1/3. Find the number就是希望高人能来翻译解释一下不需要 一道英文化学题,大概高三到大二的难度tell me which one ever u know please:just tell me why they're the right answer cause they're the answer key1.which substance can be described as cation bonded together by mobile electrons?B.Ag(s) 10 问一道英文单选have you got the result of your blood?A after half past one b.after one hour and a half请说明原因 一道英文化学题A concentrated sulfuric acid solution is 74.0% H2SO4by mass and it has a density of 1.66 g mL-1 at 20oC.What is the concentration of this H2SO4 solution? 一道英文化学题Find the velocity of an electron emitted by a metal whose threshold frequency is 2.07×1014 when it is exposed to visible light of wavelength 5.24×10m. 高中一道有机合成的化学题, 一道关于图像的化学题 初三下的一道化学题