An element x has a dibrom ide with the empirical formula xbr2 and a dichloride with the empirical formula xci2. the dibromide is completely converted to the dichloride when it is heated in a stream of chlorine according to the reaction $$xbr2 + cl2 → xci2 + br2$$ when 1.500 g xbr2 is treated, 0.890 g xci2 results. (a) calculate the atomic mass of the element x. (b) by reference to a list of the atomic masses of the elements, identify the element x.

58.85 g/mol is the atomic mass of the element X.

The element X is cobalt.

Explanation:

Moles of mol

According to reaction, 1 mole of gives 1 mole of . then mol of [tex[CBr_2[/tex] will give:

mol=\frac{1.500 g}{M}[/tex] mol[/tex]  of

Mass of moles of =0.890 g (given)

Atomic mass of element X  =m

M=

M'=

m = 58.806 g/mol

58.56 g/mol is the atomic mass of the element X.

m = 58.806 g/mol  ≈ 58.93 g/mol atomic mass of cobalt

The element X is cobalt.

Option (B) is the correct answer.

Explanation:

Plasma is defined as the state of matter which is an ionized gas that consists of positively charged ions and negative electrons. These ions move rapidly from one place to another.

Therefore, when a plasma is shifted from one container to another then it readily occupies volume of the container because a plasma has lots of space between its particles. Therefore, it is easy to compress or expand it.

Thus, we can conclude that Plasma can have lots of space between its particles, so naturally expands compresses.