The city itself. Maybe from body heat and human activities.
Answer:
A. is the correct choice.
Explanation:
If there are 70.00 g of Oxygen then it would be molecules, in which there is only 1 option with molecules.
<u><em>I am NOT professional. There is a chance I am wrong. Please reply to me if I made a mistake.</em></u>
You have to use the equation q=mcΔT and solve for T(final).
T(final)=(q/mc)+T(initial)
q=the amount of energy absorbed or released (in this case 868J)
m=the mass of the sample (in this case 15.6g)
c= the specific heat capacity of the substance (in this case 2.41 J/g°C)
T(initial)=the initial temperature of the sample (in this case 21.5°C)
When you plug everything in, you should get 44.6°C.
Therefore the final temperature of ethanol is 44.6°C
I hope this helps. Let me know if anything is unclear.
Answer:Sodium chloride has higher boiling point than Potassium chloride.
Explanation:This is due because potassium is larger than sodium,which means that sodium chloride has higher lattice energy in comparison to potassium chloride.
Answer:
Cranberry juice is a homogeneous mixture.
Explanation:
Cranberry juice is a clear, red liquid. It is a homogeneous mixture, because you can't see a boundary between the water and the dissolved red substances dissolved in the water.
A is wrong. In oatmeal with raisins, you can tell the raisins from the oatmeal (see below).
C is wrong. Milk is a suspension of fat globules in an aqueous solution of other substances
D is wrong. Pepsi in an unopened bottle is a homogeneous, clear brown aqueous solution of carbon dioxide, high fructose corn syrup, and other substances.