Cho quỳ tím vào các dung dịch sau: NH4Cl, Ba(NO3)2, HCOONa, K2SO3, FeCl3, KClO4, NaClO, MgCl2, C6H5ONa, Na2SO4, BaBr2, AlCl3, ZnSO4. Quỳ tím có màu gì? Tại sao?

What type of reaction is illustrated? 2c12o5 = 2cl2 + 502

About 70 percent of the earth's surface is water-covered, and about 96.5 percent of all earth's water is salt water. identify the watery feature on earth that is made of freshwater rather than salt water. a) bay b) glacier c) ocean d) sea it is not incomplete this is the true question

According to each substances heat of fusion, which of the items below requires more heat to be added per gram of substance to go from solid to liquid? silver sulfur water lead