I. H = 1s1 II. N = 1s2 2s2 p3 III. O = 1s2 2s2…
I. H = 1s1 II. N = 1s2 2s2 p3 III. O = 1s2 2s2 p4 IV. Zn…
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A gas exerts pressure on its container because
A gas exerts pressure on its container because A. some of its molecules are moving faster than others…
According to the kinetic theory, an increase in temperature causes the kinetic energy of particles…
According to the kinetic theory, an increase in temperature causes the kinetic energy of particles to A. Decrease…
3Cu + pHNO3 →3Cu(NO
3Cu + pHNO3 →3Cu(NO)2 + 4H2 O + xNO In the equation above, the values of p and…
Neutral atoms of neon with atomic number 10 have the same number of electron as
Neutral atoms of neon with atomic number 10 have the same number of electron as A. O2+ B.…
The noble gases owe their inactivity to
The noble gases owe their inactivity to A. Octet configuration B. Cyclic shape C. Hexagonal shape D. Obtuse…
What is the percentage by mass of oxygen in Al2(SO4)3. 2H2O? [Al = 27, S…
What is the percentage by mass of oxygen in Al2(SO4)3. 2H2O? [Al = 27, S = 32, H…
The filter in the cigarette reduces the nicotine content by
The filter in the cigarette reduces the nicotine content by A. Burning B. Adsorption C. Evaporation D. Absorption…
What volume of oxygen is produced from the decomposition of 2 mole of KCIO3 at…
What volume of oxygen is produced from the decomposition of 2 mole of KCIO3 at s.t.p? [Molar volume…
Which of the following is physical change?
Which of the following is physical change? A. Burning kerosene B. Freezing ice cream C. Exposing white phosphorus…