Quiz:Which example is used as evidence that the universe began with the Big Bang ? A left over energy
B craters on the moon
D the existence of atoms
Or
C the force of gravity

Please awnser?

A. leftover energy in the universe from the event

Explanation: Because it began with a huge bang, as a force.

pv=nrt

explanation:

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