16 |
1.6g |
18 |
x |
18×1.6 |
16 |
1.6g×80 |
16 |
10g×2 |
80 |
2×1.6g |
16 |
| ||
16 |
1.6g |
18 |
x |
18×1.6 |
16 |
| ||
80 |
16 |
y |
1.6g |
80×1.6g |
16 |
1.6g×80 |
16 |
| ||
2 |
16 |
z |
1.6g |
2×1.6g |
16 |
10g×2 |
80 |
10g×2 |
80 |
2×1.6g |
16 |
A.水银--Ag | B.纯碱--Na2CO3 |
C.生石灰--CaO | D.烧碱--NaOH |
A.该变化为化学变化 |
B.重铬酸钾中铬元素的化合价为+3 |
C.分子是不断运动的 |
D.乙醇具有挥发性 |
| ||
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