Answer:
Conservation of energy means that the total change of energy in any system is always equal to the total energy transferred into or out of the system.
Answer:
The amount of heat absorbed is <u>5.183889 kJ</u> .
Explanation:
In conversion of water to ice it rejects some heat while in conversion of ice to water it absorbs heat which is called latent heat which is given as 6.02 kJ/mol.
The amount of ice given is 15.5 g.
Converting it to moles as the latent heat is given in per moles:
![\frac{given\\weight \\ (in\\grams)}{molecular\\weight\\(in\\grams)}](https://tex.z-dn.net/?f=%5Cfrac%7Bgiven%5C%5Cweight%20%5C%5C%20%28in%5C%5Cgrams%29%7D%7Bmolecular%5C%5Cweight%5C%5C%28in%5C%5Cgrams%29%7D)
Molecular mass of Hydrogen (H) and Oxygen (O) is 1 u and 16 u respectively.
Molecular mass of water is 18 g (
⇒ 2*1+16=18 ).
mole = 15.5/18 ≈ 0.8611 moles
Therefore the amount of heat absorbed by 15.5 g of ice ( 0.8611 moles) = <em>Latent heat * moles
</em>
Heat absorbed = 6.02*0.8611
= 6.02*(15.5/18)
≈ 5.183889 kJ
Answer:
B is the answer
Explanation:
B is the most un reasonable answer to do at the BEGINNING of the process. All of the other answers are things you do at the beginning or, before you start it. "Decide whether they have designed the best possible product" means you FINISHED it already, and we want what the engineers needs to do at the beginning. Common sense actually. Your welcome.
<em>A friendly dude that likes to help</em>
Sexual reproduction is shown because the offspring receives half its genetic material from one parent and half from the other parent.