Answer:
676mmHg
Explanation:
Using the formula;
P1/T1 = P2/T2
Where;
P1 = initial pressure (mmHg)
P2 = final pressure (mmHg)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the information provided in this question;
P1 = 725.0mmHg
P2 = ?
T1 = 20°C = 20 + 273 = 293K
T2 = 0°C = 0 + 273 = 273K
Using P1/T1 = P2/T2
725/293 = P2/273
Cross multiply
725 × 273 = 293 × P2
197925 = 293P2
P2 = 197925 ÷ 293
P2 = 676mmHg.
The resulting pressure is 676mmHg
Answer:
53.93 g Ag
Explanation:
3.011x1023 atoms Ag x <u> 1 mole Ag </u> x <u>107,8683 grams</u> =
6.022x
atoms 1 mole Ag
use the periodic table fo find Ag atomic mass and use Avogadro´s number
Number of moles:
n = M x V
n = 0.002915 x 1.25
n = 0.00364375 moles
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