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3781

If the quantity of oxygen occupying 2.76L container at a pressure of 0.825 atm and 300k is reduced by one-half, what is the pressure exerted by the remaining gas?

  • A. 1.650atm
  • B. 0.825atm
  • C. 0.413atm
  • D. 0.275atm
View Answer & Discuss (26) JAMB 2020
3782

Four elements P, Q, R and S have atomic numbers of 4, 10, 12 and 14 respectively. Which of these elements is noble gas? 

  • A. P
  • B. Q
  • C. R
  • D. S
View Answer & Discuss (3) JAMB 2020
3783

The products of the thermal decomposition of ammonium trioxonitrate(v) are?

  • A. Nitrogen (I) Oxide and Water
  • B. Ammonia and Oxide
  • C. Nitrogen and Water
  • D. Nitrogen (IV) Oxide and Water
View Answer & Discuss (1) JAMB 2020
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3784

How many valence electrons are contained in the element \(^{31}_{15}P\)?

  • A. 3
  • B. 4
  • C. 15
  • D. 31
View Answer & Discuss (8) JAMB 2020
3785

The number of molecules of Carbon(iv)Oxide produced when 10.0g of CaCO\(_3\) is treated with 0.2dm\(^3\) of 1 Mole of HCL in the equation

CaCO\(_3\) + 2HCL ⇒  CaCl\(_2\)  + H\(_2\) O + CO\(_2\)  , is?

  • A. 1.00 X 10\(^{23}\)
  • B. 6.02 X 10\(^{23}\)
  • C. 6.02 X 10\(^{22}\)
  • D. 6.02 X 10\(^{24}\)
View Answer & Discuss (11) JAMB 2020
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