Answer:
Some examples of physical change are freezing of water, melting of wax, boiling of water, etc. A few examples of chemical change are digestion of food, burning of coal, rusting, etc. Generally, physical changes do not involve the production of energy
Explanation:
Answer:
81.08g of H
O will be produced.
Explanation:
Write down the balanced chemical equation:
⇒ 
⇒ 
Determine the limiting reagent:
:- 126/63.12646 = 1.995993 mol
1.995993/2 = 0.9979965
:- 192/31.9988 = 6.000225 mol
6.000225/12 = 0.50001875
Therefore, , is the limiting reagent.
Use stoichiometry ratios to determine the number of moles of water produced:
: 
12 : 9
6.000225 : 4,500168756328362
Use the mole formula to calculate the mass of water produced:
Answer:
I say for her to test her suspicion by going to see an allergist to diagnose the allergy.
Answer:
A. Increase in permafrost thickness
Explanation:
<u>Climate warming (like of 4°C) would increase the active layer thickness (ALT) of permafrost</u>, which can cause changes in the hydrological cycle, ecological processes, and carbon flux in cold regions.
