Be sure to answer all parts. identify the main group to which x belongs in each ionic compound formula: (a) xf2; (b) mgx; (c) x2so4 xf2 mgx x2so4

(a) Group IIA.

(b) Group VIA.

(c) Group IA.

Explanation:

Hello,

To solve this problem, one remembers that the subscripts are related with both the cation's and anion's oxidation states exchanging which are also related with the group they belong, thus:

(a) For since the fluoride anion has 2 as the subscript and -1 as its charge, X should belong to group IIA because X has 1 as its subscript.

(b) For since the magnesium cation has 1 as the subscript and it belongs to group IIA, it means that it has +2 and the anion has -2 as the charges, thus, X should belong to group VIA for the nonmetals that have such oxidation state.

(c) For since the sulfate anion has 1 as the subscript, and X has two, X should belong to group IA.

Best regards.

the ideal gas law equation is as follows

pv = nrt

where p - pressure

v - volume

n - number of moles

r - universal gas constant

t - temperature

so if the pressure, volume and temperature are already known

we are left with n and r

since r is the universal gas constant that has a known fixed value then r too is known

so we are left with 'n'

once we know temperature volume and pressure

we can find the number of moles of gas present using the ideal gas law equation

this is not my own answer, this is an answer for the same question by the user blahblahmali. i do not claim ownership of this account.