Which of these statements is true regarding a 0.1M solution of a weak acid HA? A: The pH is 1.00. B: [H+]< [OH-] C: [H+]= [OH-] D: The pH is more than 1.00.
Which of these statements is true regarding a 0.1M solution of a weak acid HA? A: The pH is 1.00. B: [H+]< [OH-] C: [H+]= [OH-] D: The pH is more than 1.00.
25℃时，水的离子积是（） A: 1.00×10-14 B: 1.00×10-7 C: 1.00×1014 D: 1.00×107
25℃时，水的离子积是（） A: 1.00×10-14 B: 1.00×10-7 C: 1.00×1014 D: 1.00×107
If two events are mutually exclusive, the probability that they both will occur at the same time is :（） A: 0.50. B: 1.00. C: 0.00.
If two events are mutually exclusive, the probability that they both will occur at the same time is :（） A: 0.50. B: 1.00. C: 0.00.
-6.00/+5.00=（） A: -11.00 B: -1.00 C: +1.00 D: +11.00
-6.00/+5.00=（） A: -11.00 B: -1.00 C: +1.00 D: +11.00
欲配制1.00 L 1.00 mol·L-1的NaCl溶液，可将58.5 g NaCl溶于1.00 L水中
欲配制1.00 L 1.00 mol·L-1的NaCl溶液，可将58.5 g NaCl溶于1.00 L水中
As of today, the spot exchange rate is €1.00 = $1.60 and the rates of inflation expected to prevail for the next year in the U.S. is 2% and 3% in the euro zone. What is the one-year forward rate that should prevail? ( ) A: €1.00 = $1.6157 B: €1.6157 = $1.00 C: €1.00 = $1.5845 D: $1.00 × 1.03 = €1.60 × 1.02
As of today, the spot exchange rate is €1.00 = $1.60 and the rates of inflation expected to prevail for the next year in the U.S. is 2% and 3% in the euro zone. What is the one-year forward rate that should prevail? ( ) A: €1.00 = $1.6157 B: €1.6157 = $1.00 C: €1.00 = $1.5845 D: $1.00 × 1.03 = €1.60 × 1.02
角膜曲率仪测定的水平径线为8.0mm，垂直径线为7.8mm，则散光为（）。 A: —1.00*180 B: —1.00*90 C: +1.00*90 D: +1.00*180
角膜曲率仪测定的水平径线为8.0mm，垂直径线为7.8mm，则散光为（）。 A: —1.00*180 B: —1.00*90 C: +1.00*90 D: +1.00*180
如：-3.00×90/-4.00×180=-3.00/-1.00×180或-4.00/+1.00×90（）
如：-3.00×90/-4.00×180=-3.00/-1.00×180或-4.00/+1.00×90（）
必然事件的概率值是（） A: -1.00 B: 0.00 C: 1.00 D: 10.00
必然事件的概率值是（） A: -1.00 B: 0.00 C: 1.00 D: 10.00
1.00/8.00 3.60
1.00/8.00 3.60