题目内容

Which statement describes a chemical property? ( )

Alkali metals can never be found free in nature
B. The rock is hard
C. Water boils at 100 oC
D. Phosphorus dissolves in carbon disulfide

查看答案

搜索结果不匹配？点我反馈

更多问题

Which one is the molecular compound? ( )

A. NaBr
B. (NH4)2SO4
C. O2
D. NO

查看答案

The isotopic composition of naturally occurring boron includes boron-10 and boron-11. Which statement is correct? ( )

A. There is much more boron-10 than boron-11
B. There is slightly more boron-10 than boron-11
C. The boron-10 and boron-11 are almost equal
D. There is much less boron-10 than boron-11

查看答案

Which one is the extensive property? ( )

A. density
B. pressure
C. number of moles
D. concentration

查看答案

If a mixture of 30.0 g O2 and 24.3 g Mg reacts to generate MgO, what is the total mass of the product and leftover reagent? ( )

A. 37.8 g
B. 30.3 g
C. 54.3 g
D. 56.3 g

查看答案

Which statement describes a chemical property? ( )

Alkali metals can never be found free in nature B. The rock is hard C. Water boils at 100 oC D. Phosphorus dissolves in carbon disulfide

Which one is the molecular compound? ( )

The isotopic composition of naturally occurring boron includes boron-10 and boron-11. Which statement is correct? ( )

Which one is the extensive property? ( )

If a mixture of 30.0 g O2 and 24.3 g Mg reacts to generate MgO, what is the total mass of the product and leftover reagent? ( )

Alkali metals can never be found free in nature
B. The rock is hard
C. Water boils at 100 oC
D. Phosphorus dissolves in carbon disulfide