Which of the following groups of physical properties increases from left to right of the…
Which of the following groups of physical properties increases from left to right of the periodic table? i.…
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When 50cm3 of a saturated solution of sugar (molar mass 342.0g) at 40oC was evaporated…
When 50cm3 of a saturated solution of sugar (molar mass 342.0g) at 40oC was evaporated to dryness, 34.2g…
The relationship between the velocity (U) of gas molecules and their relative molecular mass (M)…
The relationship between the velocity (U) of gas molecules and their relative molecular mass (M) is shown by…
An element with atomic number twelve is likely to be
An element with atomic number twelve is likely to be A. electrovalent with a velocity of 1 B.…
The number of atoms of chlorine present in 5.85g of NaCl is [Avogaro’s Number =…
The number of atoms of chlorine present in 5.85g of NaCl is [Avogaro’s Number = 6.02 x 1023]…
How much of magnesium is required to react with 260cm3 of 0.5 M HCl? [Mg…
How much of magnesium is required to react with 260cm3 of 0.5 M HCl? [Mg = 24] A.…
The Avogadro number of 24g of magnesium is the same as that of
The Avogadro number of 24g of magnesium is the same as that of A. 1g of hydrogen molecules…
10cm3 of hydrogen fluoride gas react with 5cm3 of dinitrogen difluoride gas (N2F2) to form…
10cm3 of hydrogen fluoride gas react with 5cm3 of dinitrogen difluoride gas (N2F2) to form 103 of a…
The nucleus of the isotopes tritium,contains
The nucleus of the isotopes tritium,contains A. two neutrons with no protons B. one neutron and one proton…
COg + H2Og (to) 2g + H2g (Delta)H = -4100J. Which of the following factors…
COg + H2Og (to) 2g + H2g (Delta)H = -4100J. Which of the following factors favour the formation…