A.物质的量的多少 | B.6.02×1023个微粒 |
C.物质的量的单位 | D.物质的质量单位 |
A.30mL3mol/L的NaCl溶液 | B.20mL3mol/L的Na2CO3溶液 |
C.15mL4moL/L的NaOH溶液 | D.30mL4mol/L的NaCl溶液 |
A.2: 3 | B.3: 2 | C.1:2 | D.2:1 |
A.4L0.5mol/L NaCl溶液 | B.1L0.3mol/L Na2SO4溶液 |
C.5L0.4mol/L NaOH | D.2L0.15mol/L Na3PO4 |
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