The molecule dichlorofluoromethane, chfci,
is used as a refrigerant. tetrafluoromethane,
cf, was also considered as a possible
refrigerant. draw the three-dimensional
iure.

explanation:

venn diagram is pictorial representation with of circles showing the relation between two finite sets or things. the intersection part of two circles conveys the relation present in between those sets or things.

here in the venn diagram of sand and salt two circles represent sand and salt. but the area falling under the intersection of these circle represents the mixture of sand and salt.

so, in a venn diagram the mixture will be placed in a middle that is in between the intersection of two circles.

the formula mass of a molecule or a compound is the sum of the atomic weights of the atoms in its empirical formula

(that's what i know about formula mass)

ok whats the question if not i cannot you i need question and need a thing to answer