A photon has a frequency of 535 MHz. What is the energy of this photon? 1. 3.72 × 10−22 J

2. 1.78 × 10−6 J

3. 3.72 × 10−28 J

4. 0.561 J

5. 3.55 × 10−25 J

6. 5.61 × 1011 J

7. 3.55 × 10−31 J

8. 1.61 × 1011 J

9. 561000 J

pla·gia·rism

/ˈplājəˌrizəm/

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noun

the practice of taking someone else's work or ideas and passing them off as one's own.

explanation:

1.43 x 10^-11 j the guy commented the awnser just making sure u see it .

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