Using the standard enthalpies of formation for the chemicals involved, calculate the enthalpy change for the following reaction.

(note: show the math clearly and provide units in your set up) ( hf values in kj/mol are as follows: no2 32, h2o 286, hno3 207, no 90.)

3no2(g) h2o(l) 2hno3(aq) no(g) g

-134 kJ

Explanation:

The balanced chemical reaction is,

The expression for enthalpy change is,

where,

n = number of moles

Now put all the given values in this expression, we get

Therefore, the enthalpy change for this reaction is, -134 kJ

what's the

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates