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The number of unpaired electrons in 1s 2 2s 2 2p 4 is: (1) 4 (2) 2 (3) 0 (4) 1 Ans: 2
The ph of an aqueous solution of Ba(OH)2 is 10 if the ksp of Ba(OH)2 is 1*10^-9 then the concentration of Ba+2 ions in the aqueous solution is Ans) [OH(-)] = 10^(-4) 2.
1. The pH of a 0.02 M solution of an acid was measured as 4.6. a) What is the [H + ] of the solution? b) What is the acid dissociation constant K an
wht is the difference between molar mass & molecular mass?
#quest defination ,description prostulates
various types of medicines use in daily life? and classify them into analgesics, antipyretics, antibiotics, sedatives, antiseptics.
all about isotopes
If there is a fire accident in an industry, what a safety enginner will do? Ans) Fire engineering is the application of engineering and science principles to protect prope
SULFUR, SELENIUM AND TELLURIUM The elements known commonly as the chalcogens are in the same group (16) as oxygen. They form some compounds same to those of oxygen, but show m
(a) Which aqueous solution has higher concentration 1 molar or 1 molar solution of the same solute? Give reason. (b) 0.5g KCI was dissolved in 100g water and the solution origi
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