A: 9 g•L-1 NaCl solution
B: 90 g•L-1 NaCl solution
C: 10 g•L-1 glucose solution
D: 6.25 g•L-1 NaHCO3 solution
举一反三
- A 1 M solution of glucose contains _____ g/L of glucose. A: 18 B: 128 C: 168 D: 180
- 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
- 会使红细胞发生皱缩的溶液是()。 A: 50 g·L-1葡萄糖 B: 5 g·L-1葡萄糖 C: 0.9 g·L-1NaCl D: 9 g·L-1NaCl E: 90 g·L-1 NaCl
- 会使红细胞发生皱缩的溶液是 A: 9.0 g·L-1 NaCl (Mr =58.5) 溶液 B: 1.0 g·L-1 NaCl溶液 C: 12.5 g·L-1 NaHCO3 (Mr =84) 溶液 D: 112 g·L-1 C3H5O3Na (Mr =112) 溶液
- Which property increases with the increasing of the concentration of an electrolyte aqueous solution? ( ) (A) k in dilute solution (B) Lm (C) g± (D) Ionic mobility A: A B: B C: C D: D
内容
- 0
Fehling's solution consists solution of A and B, a solution of ____, and a solution of potassium sodium copper tartrate.
- 1
The sequence of reagents used in Gram staining is () A: Safranin solution → iodine solution → alcohol →<br/>crystal violet B: crystal violet → alcohol → iodine solution → Safranin<br/>solution C: Crystal violet → iodine solution → alcohol → Safranin<br/>solution D: Safranin solution → alcohol → crystal violet → iodine<br/>solution E: Safranin solution → crystal violet → iodine solution →<br/>alcohol
- 2
Transporting the trash to the rural areas is considered as______. A: an effective solution B: a costly solution C: a dangerous solution D: a feasible solution
- 3
17da4369f546a72.png上图为照相机成像示意图，那么透镜成像的公式为： A: 1/L+1/L'=1/f B: 1/L-1/L'=1/f C: 1/L+1/f=1/L' D: 1/L-1/f=1/L'
- 4
Which<br/>of the following buffer solutions have the largest buffer capacity? ( ) A: 1L 0.1 M HAc solution + 1L 0.2 M NaAc solution B: 1L 0.15 M HAc solution + 1L 0.15 M NaAc solution C: 1L 0.1 M HAc solution + 1L 0.1 M NaAc solution D: 1L 0.2 M HAc solution +1L 0.1 M NaAc solution