Suppose an element had an atomic number of 52. How many protons would that element have?
2 answers:
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Answer:
No. of moles, n = 25.022 moles
Given:
Volume of gas in tank, V = 29.1 l
Temperate of gas, T = = 273 + 35.8 = 308.8 K
Pressure of gas, P = 21.8 atm
Solution:
Making use of the ideal gas equation which given as:
PV = nRT
where
R = Rydberg's constant = 0.0821 L-atm/mol-K
Re-arranging the above formula for 'n' and putting the values in the above formula:
n = 25.022
For a curved mirror, the radius of curvature R is twice the focal length f:
(1)
Since the diameter d is twice the radius R, we can rewrite (1) as
From which we can calculate the focal length from the diameter:
Since the diameter d is twice the radius R, we can rewrite (1) as
From which we can calculate the focal length from the diameter: