t℃时,A物质的溶解度为25g.在t℃时,向50g水中加入15gA物质,充分搅拌

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问题:

t℃时,A物质的溶解度为25g.在t℃时,向50g水中加入15gA物质,充分搅拌后,所得溶液是______溶液(填“饱和”或“不饱和”),此溶液中溶质的质量分数为______;若A是一种可溶性盐,其化学式简单表示为Na2X,则此溶液中大量______存在的带电的粒子有______(用离子符号表示).

考点:关于溶液的计算固体溶解度构成物质的微粒(分子、原子、离子)
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法国作家左拉极力推崇某一美术流派,认为其“给予人们的是感觉,而不是思想”。这个美术流派是

A.浪漫主义

B.现实主义

C.印象主义

D.现代主义

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下列说法中正确的是(  )

A.铁的摩尔质量就是铁的相对原子质量

B.CO32-的摩尔质量是60g/mol

C.1molO2的质量是32g/mol

D.CO2的摩尔质量是44g

题型:填空题

Cullen Casket Company is considering a project that requires a $175000 cash outlay and is expected to produce cash flows of $65000 per year for the next four years. Cullen’s tax rate is 40 percent and the before-tax cost of debt is 9 percent. The current share price for Cullen stock is $32 per share and the expected dividend next year is $1.50 per share. Cullen’s expected growth rate is 5 percent. Cullen finances the project with 70 percent newly issued equity and 30 percent debt, and the flotation costs for equity are 4.5 percent. What is the dollar amount of the flotation costs attributable to the project, and that is the NPV for the project, assuming that flotation costs are accounted for correctly Dollar amount of floatation costs NPV of project()①A. $5513 $30510 ②B. $5513 $32872 ③C. $7875 $32872

A. ①

B. ②

C. ③

题型:填空题

收入指数化

题型:填空题

古代“子时”指的是( )。

A.晚上9点~晚上11点
B.晚上10点~晚上12点
C.晚上11点~凌晨1点
D.晚上12点~凌晨2点

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