1.计算题- (共1题)
(1)配制30g 10%的Na2CO3溶液。量取蒸馏水所需量筒的规格是 (从10、50、100中选择)mL。最后将碳酸钠溶液转移到试剂瓶中,贴上标签备用,在标签上可以不必注明的是 (填序号)。
A.30g | B.10% | C.Na2CO3溶液 |

①恰好完全反应时,消耗Na2CO3溶液的质量为 g。
②请通过计算确定Ba(OH)2溶液的溶质质量分数。
已知:Ba(OH)2+ Na2CO3=BaCO3↓+2NaOH。
2.单选题- (共5题)
A.磷酸二氢钾也可用作复合肥料 | B.磷酸二氢钾是一种氧化物 |
C.磷酸二氢钾中含有氢气 | D.磷酸二氢钾中磷元素为+4价 |

| X | Y |
A | CO | Ca(OH)2溶液 |
B | CO2 | NaOH溶液 |
C | HCl | Ca(OH)2溶液 |
D | SO2 | NaOH溶液 |
A.A | B.B | C.C | D.D |
3.选择题- (共1题)
根据中文意思填空,完成短文,并注意单词的正确拼写形式。(每空一词)
Do you enjoy eat nuts? Have you ever tired Chinese torreya nuts(香榧)? Zhuji is {#blank#}1{#/blank#}(广泛地)known for this special kind of nuts. Most of the Chinese torreya trees are grown in the {#blank#}2{#/blank#} (东部) of Zhuji. Every autumn, the nuts are picked by the {#blank#}3{#/blank#} (当地的)people and then sent for {#blank#}4{#/blank#} (加工).Not everyone gets the ________(秘诀)of frying(炒制) the nuts. Only the experienced workers can make it. People in Zhuji take ________(骄傲)in the Chinese torreya nuts, .and the nuts are usually {#blank#}7{#/blank#} (放置)out to treat {#blank#}8{#/blank#} ( 亲属 ) and friends. Nowadays, more and more people fall in love with the nuts. And it {#blank#}9{#/blank#} (创造) good business for Zhuji. . What a great {#blank#}10{#/blank#} (影响)the Chinese torreya nuts have on Zhuji!
4.填空题- (共2题)
-
【1】题量占比
计算题:(1道)
单选题:(5道)
选择题:(1道)
填空题:(2道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:1
5星难题:0
6星难题:2
7星难题:0
8星难题:3
9星难题:2