Answer:
A precipitate forms; the colour changes.
Step-by-step explanation:
The formation of a precipitate a colour change are always signs that a chemical reaction has occurred.
A, B, C, and D are <em>wrong.</em> They are signs of a reaction, but you did not observe them here.
Potassium sulfite<span> (K</span>₂<span>SO</span>₃<span>)
hope this helps!</span>
Answer:
See explanation
Explanation:
The heat capacity of a substance is determined by the chemical composition of the substance and its mass.
Now, if substances have equal masses, the substance with the lesser heat capacity undergoes the greater temperature change.
Hence, among the substances, the particular one with the lowest heat capacity is expected to undergo the greatest temperature change.
Use number of mole=mass (in grams) divided by molar mass
AKA n=m/Mr
->Using the mass (4.78g) given to you until he question. Then put the number of mole in pV=nRT but rearrange to
p=nRT divided by volume (V).
AKA p=nRT/V
Also don't forget to convert your temperature to Kelvins (add 273 to your temperature)
