If the volume of a gas is recoded as 76cm³ at a temperature of 27°C with a pressure of 800mmHg. What will be the volume of the gas at S.T.P?
A. 36.2cm³ B. 25.7cm³ C. 72.8cm³ D. 24.3cm³ Correct Answer: Option C – 72.8cm³ Explanation General formular of Gas laws (P1V1) ÷ T1 = (P2V2) ÷ T2 P1 = 800mmHg, V1, = 76cm³, T1 = 273 + 27 = 300k P2 = 760mmHg, V2 = ? T2= 273 + 0 = 273 + 6 = 277k (800 × 76) ÷ 300 =...
In the diagram below; the neutral point is at?
A. R B. X C. S D. P Correct Answer: Option B = X
In the diagram below; which of the following velocity-time graphs shows uniform acceleration of a body from rest?
A. C B. D C. B D. A Correct Answer: Option C = B Explanation See the velocity-time graph.
An electron in a hydrogen atom makes a transition from the ground level to the third level. If the energy at the ground level; calculate the energy at the third level. [h = 6.6 x 10^-34Js; f = 10^15Hz]
A. 1.41eV B. 1.71eV C. 1.61eV D. 1.51eV Correct Answer: Option D – 1.51eV Explanation E = Eo/n² = 13.6/3² = 13.6eV/9 = 1.51eVProducts
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