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hardwick744
01.12.2020 •
Chemistry
HELP
How many moles of Ag (silver) contain 4.49 x 1023 atoms Ag?
27.0 mol
0.746E23 mol
0.746 mol
0.746E24 mol
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Ответ:
C, 0.746 mol Ag.
1 mol Ag = 6.022 x 1023 atoms of Ag -> 4.49 x 1023 atoms of Ag x 1mol Ag/6.022 x 1023 atoms -> 0.746 mol Ag
Ответ:
0.333 atm
Explanation:
Step 1: Given data
Initial pressure (P₁): 0.370 atmInitial temperature (T₁): 30.0 °CFinal pressure (P₂): ?Final temperature (T₂): 273.15 K (standard temperature)Step 2: Convert 30.0 °C to Kelvin
We will use the following expression.
K = °C + 273.15 = 30.0 + 273.15 = 303.2 K
Step 3: Calculate the final pressure of the gas
If we assume ideal behavior and constant volume, we can calculate the final pressure od the gas using Gay-Lussac's law.
P₁/T₁ = P₂/T₂
P₂ = P₁ × T₂/T₁
P₂ = 0.370 atm × 273.15 K/303.2 K = 0.333 atm