I NEED ANSWER ASAP A cube of sugar has a mass of 12 grams and a volume of 8 cubic centimeters (cm^3). What is its density? [You may use a calculator.] Choose the BEST answer.

0.67 g/cm^3

0.67

1.5 g/cm^3

1.5

gravity causes stares to cluster i think so

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