Measurable weights of NaCl are 1.52g, and their real weights are 1.54g. Could you find the absolute error of measurable results? ()
A: 0.02
B: 0.2
C: -0.02
D: -0.2
A: 0.02
B: 0.2
C: -0.02
D: -0.2
举一反三
- Measurable<br/>weights of NaCl are 1.52 g, and their real weights are 1.54 g. Could<br/>you find the absolute error of measurable results?<br/>( ) A: 0.02 g B: -0.02 g C: 0.2 g D: -0.2 g
- Measurable<br/>weights of NaCl are 1.52 g, and their real weights are 1.54 g. Could<br/>you find the relative errors of measurable results? ( ) A: 1.3<br/>% B: -1.3% C: -0.654% D: 0.654%
- 对定量分析结果的相对平均偏差的要求,通常是( ) A: ≥ 0.2% B: ≥ 0.02% C: ≤ 0.2% D: ≤ 0.02%
- 若精确值是10，则近似值9.8的绝对误差和相对误差分别是 。 A: 0.2, 0.02 B: 0.2, 0.002 C: 0.02, 0.002 D: 0.02, 0.002
- 万分之一电子天平称量时,为保证称量误差≤0.1%,每次称取物质的量应不小于 A: 0.01 g B: 0.02 g C: 0.1 g D: 0.2 g