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padilas [110]
3 years ago
9

Alcohol and water are placed into closed-end manometer, in order to measure the vapor pressure of each of the 2 liquids at 25oC.

the figure represents the observation few hours after placing the liquids.
a) Calculate the Vapor pressure of alcohol P vapor (alcohol) in mmHg and atm.
(choose 2 answers!)

1) Vapor pressure in mmHg = 100mm Hg
2) Vapor pressure in mmHg = 50mm HG
3) Vapor pressure in atm = 0.13 atm
4) Vapor pressure in atm = 0.26 atm

Chemistry
2 answers:
ElenaW [278]3 years ago
6 0

Answer:

3) Vapor pressure in atm = 0.13 atm

Explanation:

mihalych1998 [28]3 years ago
3 0

Answer:

Vapor pressure in atm = 0.13 atm

Explanation:

Hope it will hlp

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calculate the molar mass of nickel (iii)oxide to the nearest tenth place. Give both the numerial value and the units
maksim [4K]
Nickel (Ni) has the charge as +3 while oxygen (O) has -2. Hence, the chemical formula for the nickel (iii) oxide is Ni₂O₃. 

molar mass of Ni = 58.69 g/mol
molar mass of O = <span>15.99 g/mol

number of Ni atoms in </span>Ni₂O₃ = 2
Molar mass of Ni in Ni₂O₃ = 2 x 58.69 g/mol = 117.38 g/mol

number of O atoms in Ni₂O₃ = 3
Molar mass of O in Ni₂O₃  = 3 x 15.99 g/mol = 47.97 g/mol


Hence, molar mass of compound = 117.38 g/mol + 47.97 g/mol
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Specifically, what do we mean when we say that a scientific hypothesis must be testable?​
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Answer:

Explanation:

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Measurements show that unknown compound has the following composition: element mass 62.1 % carbon, 10.5 % hydrogen and 27.6 % ox
tino4ka555 [31]

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