中学生网络课堂本课配套习题挑战模式2/4
单选题
难度系数：
2.
下列说法正确的是
| A: 20 ℃时20 g某物质溶解在100 g水里形成溶液，则20 ℃时某物质的溶解度是20 g |
| B: 20 ℃时20 g某物质溶于水制成饱和溶液，则20 ℃时该物质的溶解度是20 g |
| C: 20 g某物质在100 g水里恰好制成饱和溶液，所以该物质的溶解度为20 g |
| D: 20 ℃时100 g水里最多只能溶解20 g某物质，则20 ℃时该物质的溶解度为20 g |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+QS4gMjDihIPml7bvvIwyMGfnianotKjmurbop6PlnKgxMDBn5rC06YeM77yM5rKh5oyH5piO5rq25ray55qE54q25oCB5piv5ZCm6L6+5Yiw6aWx5ZKM77yM5omA5Lul5peg5rOV56Gu5a6aMjDihIPml7bnianotKjnmoTmurbop6PluqbmmK8yMGfvvIzmlYVB6ZSZOzxicj48L3A+
- 提示2：PHA+Qi4gMjDihIPml7bvvIwyMGfmn5DnianotKjmurbkuo7msLTliLbmiJDppbHlkozmurbmtrLvvIzliJkyMOKEg+aXtuivpeeJqei0qOeahOa6tuino+W6puaYrzIwZ++8jOivtOazlemUmeivr++8jOWboOS4uuayoeacieivtOaYjuaYr+WQpuaYrzEwMGfmsLTvvIzmlYVC6ZSZOzxicj48L3A+
- 提示3：PHA+Qy4gMjBn5p+Q54mp6LSo5ZyoMTAwZ+awtOmHjOaBsOWlveWItuaIkOmlseWSjOa6tua2su+8jOaJgOS7peivpeeJqei0qOeahOa6tuino+W6puS4ujIwZ++8jOivtOazlemUmeivr++8jOWboOS4uuayoeacieaMh+aYjua4qeW6pu+8jOaVhUPplJk7PGJyPjwvcD4=
- 答案：RA==
PHA+MjDihIPml7YxMDBn5rC06YeM5pyA5aSa5Y+q6IO95rq26KejMjBn5p+Q54mp6LSo77yM5YiZMjDihIPml7bor6XnianotKjnmoTmurbop6PluqbkuLoyMGfjgILmoLnmja7murbop6PluqbnmoTlrprkuYnvvJrigJzmurbop6PluqbmmK/lnKjkuIDlrprmuKnluqbkuIvvvIwxMDBn5rq25YmC6YeM5pyA5aSa6IO95rq26Kej55qE5p+Q56eN54mp6LSo55qE6LSo6YeP4oCd77yM6K+l6K+05rOV5q2j56Gu77yM5pWF6YCJRC48YnI+PC9wPg==
本课配套习题挑战模式3/4
单选题
难度系数：
3.
在温度不变的条件下，下列欲使溶质的质量分数变为原来2倍的方法，最可行的是
| A: 将20g硝酸钾饱和溶液蒸发掉10g水 |
| B: 将20g硝酸钾不饱和溶液蒸发掉10g水 |
| C: 在10g10﹪的硝酸钾溶液中，加入5g40﹪的硝酸钾溶液 |
| D: 在10g硝酸钾不饱和溶液中加入10g硝酸钾固体 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+QS7lsIYyMGfnoZ3phbjpkr7ppbHlkozmurbmtrLokrjlj5HmjokxMGfmsLTvvIzmuKnluqbkuI3lj5jvvIzmurbop6PluqbkuI3lj5jvvIzmurbotKjlkozmurbliYLnmoTmr5TkuI3lj5jvvIzotKjph4/liIbmlbDkuI3kvJrmlLnlj5jjgII8YnI+PC9wPg==
- 提示2：PHA+Qi7lsIYyMGfnoZ3phbjpkr7kuI3ppbHlkozmurbmtrLokrjlj5HmjokxMGfmsLTvvIzml6Dms5XliKTmlq3murbmtrLot53nprvppbHlkozmurbmtrLov5jlt67lpJrlsJHjgII8YnI+PC9wPg==
- 提示3：PHA+RC7lnKgxMGfnoZ3phbjpkr7kuI3ppbHlkozmurbmtrLkuK3liqDlhaUxMGfnoZ3phbjpkr7lm7rkvZPvvIzml6Dms5XliKTmlq3murbmtrLnprvppbHlkozmurbmtrLov5jlt67lpJrlsJHjgII8YnI+PC9wPg==
- 答案：Qw==
PHA+Qy7lnKgxMGcxMCXnmoTnoZ3phbjpkr7murbmtrLkuK3vvIzliqDlhaU1ZzQwJeeahOehnemFuOmSvua6tua2suOAgiDlj6rmnInov5nkuIDmnaHog73mmI7mmI7nmb3nmb3nrpflh7rmurbotKjnmoTotKjph4/liIbmlbDlj5jkuLrvvJooMTDDlzEwJSs1w5c0MCUpLygxMCs1KT0yMCXvvIzmlYVD5q2j56Gu44CCPGJyPjwvcD4=
本课配套习题挑战模式4/4
单选题
难度系数：
4.
相同温度下，下列四种食盐溶液中食盐的质量分数最大的是
| A: 20g食盐溶于80g水 |
| B: 80g食盐溶液中含20g食盐 |
| C: 18g水中溶解食盐2g |
| D: 溶解度为36g时的饱和食盐水溶液 |
一次做对，真牛！
+5奖励规则>
- 提示1：PHA+QemhueeahOi0qOmHj+WIhuaVsOaYrzxpbWcgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zMy9GMS9yQkFDRTFNUzdqX2pEVVVCQUFBRUFpTkV4bHc1MDIucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzMzL0YxL3JCQUNFMU1TN2pfakRVVUJBQUFFQWlORXhsdzUwMi5wbmciIGhlaWdodD0iNDEiIHdpZHRoPSIxNTAiPjwvcD4=
- 提示2：PHA+QumhueS4reeahOi0qOmHj+WIhuaVsOaYrzxpbWcgc3JjPSJodHRwczovL3AyLnFpbmdndW8uY29tL0cxL00wMC8zMy9GMS9yQkFDRTFNUzdrRFQtZVhRQUFBRG53ME5KOHM4MDkucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDIucWluZ2d1by5jb20vRzEvTTAwLzMzL0YxL3JCQUNFMU1TN2tEVC1lWFFBQUFEbncwTko4czgwOS5wbmciIGhlaWdodD0iNDEiIHdpZHRoPSIxMTQiPjwvcD4=
- 提示3：PHA+Q+mhueeahOi0qOmHj+WIhuaVsOaYrzxpbWcgc3JjPSJodHRwczovL3AxLnFpbmdndW8uY29tL0cxL00wMC8xMC9ENS9yQkFDRkZNUzdrRGd4R0xuQUFBRHdDbUkxVE01MTIucG5nIiBkYXRhLWNrZS1zYXZlZC1zcmM9Imh0dHBzOi8vcDEucWluZ2d1by5jb20vRzEvTTAwLzEwL0Q1L3JCQUNGRk1TN2tEZ3hHTG5BQUFEd0NtSTFUTTUxMi5wbmciIGhlaWdodD0iNDEiIHdpZHRoPSIxNDEiPjwvcD4=
- 答案：RA==
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
