How many atoms are in one formula unit of the compound FeC5O5?
O 10
05
12
O 11

In one formula unit of  , the number of atoms of oxygen has been 5. Thus , option B is correct.

Formula unit has been the empirical representation of the chemical compound. The formula has been responsible to deliver the information about the number of atoms of each elements present in the sample.

The given compound has been . The formula has subscript with each element representing the number of atoms.  The atoms of each element has been:

The number of atoms of oxygen present in one formula unit of has been 5. Thus , option B is correct.

For more information about the formula unit, refer to the link:

link

 D) 11

Explanation:

We have 1 iron atom (the Fe)

We have 5 carbon (denoted )

We have 5 oxygen atoms (denoted )

So we have 1+5+5 = 11 atoms in this compound.

i think so it’s will be b yes i believe its

answer : third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol

explanation :

let us write down the given equations

equation 1 :

equation 2 :

equation 3 :

let us use hess's law to find out which 2 equations can be added to get the third equation.

let us reverse equation 2 and multiply it by 2. the new equation that we get is,

equation 4 :

let us add equation 1 & 4

the above equation is similar to equation 3 but has different value for dhrxn.

therefore third trial had the contaminated sample and the correct value for dhrxn should be 1000 kj/mol