%%

Gaokao Chemistry Practice Question

$N_{\mathrm{A}}$ 是阿伏加德罗常数的值。下列说法正确的是

  1. A.$22.4 \mathrm{~L}$ (标准状况)氮气中含有 $7 N_{\mathrm{A}}$ 个中子
  2. B.$1 \mathrm{~mol}$ 重水比 $1 \mathrm{~mol}$ 水多 $N_{\mathrm{A}}$ 个质子
  3. C.$12 \mathrm{~g}$ 石墨烯和 $12 \mathrm{~g}$ 金刚石均含有 $N_{\mathrm{A}}$ 个碳原子
  4. D.$1 \mathrm{~L} \ 1 \mathrm{~mol} \cdot \mathrm{L}^{-1} \mathrm{NaCl}$ 溶液含有 $28 N_{\mathrm{A}}$ 个电子

Want to know if you got it right?

Answer this and thousands more real Gaokao previous-year questions free, get graded instantly, and climb the global ranked leaderboard.

Practice Gaokao free →

More Gaokao Chemistry questions