An open-tube manometer is used to measure the pressure in flask. The atmospheric pressure is 756 torr and the Hg column is 10.5 cm higher on the open end. What is the pressure in the flask?
1 answer:
Answer:
P flask = 860.966 torr
Explanation:
⇒ P open tube = Patm + (δHg)(g)(h) = P flask
∴ δHg = 13.6 g/cm³
∴ g = 980 cm/s²
∴ h = 10.5 cm
⇒ (δHg)(g)(h) = (13.6 g/cm³)(980 cm/s²)(10.5 cm) = 139944 g/cm.s²
⇒ (δHg)(g)(h) = (13994.4 Kg/m.s²(Pa))×( 0.00750062 torr/Pa)
⇒ (δHg)(g)(h) = 104.966 torr
⇒ P flask = 756 torr + 104.966 torr
⇒ P flask = 860.966 torr
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