The idea that the universe began from a single point and expanded to its current size explains a large number of observations, including those in the table below. Observations Explained The universe consists mostly of low-mass elements. Cosmic microwave background is nearly the same in all directions. Light from other galaxies shows that these galaxies are moving away from Earth. In addition, many predictions based on the idea have led to additional observations that support it. Which best describes this idea of the origin of the universe? hypothesis theory law fact

the answer is either b or c

i believe it is a.) released into

explanation:

the answer is c

tell me if wrong

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