Measurements show that the enthalpy of a mixture of gaseous reactants increases by 243.kJ during a certain chemical reaction, wh
1 answer:
Answer: The change of energy of the gas mixture during the reaction in 69 kJ
Explanation:
According to first law of thermodynamics:
=Change in internal energy
q = heat absorbed or released
w = work done or by the system
w = work done on the system
w = -174 kJ
q = +243 kJ {Heat has increased so heat is absorbed}
Thus the change of energy of the gas mixture during the reaction in kJ is 69
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<em>hey there,</em>
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< The formula for density is where m = mass, v = volume, and p = density. An easy way to remember the formula is density equals love. I found this easy to remember because p = ♡ and when you think about it, if you split the heart in half through the middle like a fraction, it will make
(if you don't understand what I'm saying, try writing it out and you will be able to see what I'm talking about!)
We already know that the block is 253 g so the mass is 253 g.
To find the volume, always multiply the 3 values width, length, and height whenever you are trying to find the volume of a block.
15.24 cm x 6.64 cm x 3.56 cm = 360.25 cm³
Now plug it into the formula.³ >
<u>Hope this helped! Feel free to ask anything else.</u>