Which material will heat the fastest?

Chemistry

1 answer:

Sholpan [36]4 years ago

8 0

Answer:

Lead

Explanation:

Lower the specific heat faster it will heat, meaning liquid will heat up slowly than any other material mentioned above. Thus lead will heat up faster

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A solution with a volume of 1.00 l is 0.450 m in ch 3 cooh(aq) and 0.550 m in ch 3 coona(aq). what will the ph be after 0.0800 m

Semenov [28]

Before addition of HCl,

conc. of CH3COOH = 0.450 M
conc. of CH3COONa = 0.550 M

After addition of 0.08 M HCl, following reaction occurs in system:
HCl + CH3COONa ↔ CH3COOH + NaCl

Thus, in reaction system conc. of CH3COOH will increase to 0.53 M (0.08M + 0.450M)
And, conc to CH3COONa will reduce to 0.47 M (0.550M - 0.08M)

Now, conc. of H+ ions = ka $\frac{[acid]}{[conjugated base]}$
where ka = dissociation constant for acid = 10^-5 for Ch3COOH

∴ conc. of H+ ions = $\frac{0.53}{0.47}$
= 1.1277 x 10^-5

Now, pH = -log [H+] = -log (1.1227 x 10^-5) = 4.94

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yanalaym [24]

The answer of this question is B. Tessa could use more plants and multiple trials

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The galvanic cell illustrated above generates a potential of +1.10V. For the construction of a second galvanic cell (not shown),

xxTIMURxx [149]

Answer:

The initial E° for the second cell is the same as for the first cell.

Explanation:

Because the overall chemical reaction that occurs in the cell does not change.

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