You come across a mysterious substance that has a mass of 1.8225 x 10 to the power of 2g and a volume of 0.025 L (1L = 1000 mL). Using the density formula what is the density

the answer would be b i believe

it is a solid

explanation:

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;

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