Class 12th
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New answer posted
10 months agoContributor-Level 10
It is process in which nutrient enriched water bodies support a dense plant population which kills animal life by depriving it of oxygen and result in subsequent loss of biodiversity is known as Eutrophication.
New answer posted
10 months agoContributor-Level 10
ΔTb = 0.6 K
ΔTb = Kb * m = Kb * (wt. * 1000)/ (mol wt. * Wsolvent (gm)
0.6 = 5 * (3 * 1000)/ (mol wt. * 100)
∴ mol wt. = (15 * 10)/ (0.6) = 1500/6
= 250 g/mole
New answer posted
10 months agoContributor-Level 9
(CH?)?N?HCl produces H? which reacts with NaHCO? and CO? gas evolved, because HCl is stronger acid than H?CO?
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10 months agoContributor-Level 10
A → B
t=0: a, 0
t=30min: (a-x), x
given x = 0.2 mole / lit
Average rate = +Δ [B]/Δt = 0.2 mole/lit / (30/60)h = 0.4 mole lit? ¹h? ¹
= 4 * 10? ¹ mole lit? ¹h? ¹
New answer posted
10 months agoNumber of electrons present in 4f orbital of Ho³? ion is __________.
(Given atomic number of Ho = 67)
Contributor-Level 10
? Ho = [Xe] 4f¹¹ 6s²
∴ Ho? ³ = [Xe] 4f¹? 6s?
Number of electrons in 4f- subshell = 10
New answer posted
10 months ago
Contributor-Level 9
Novolac is a linear polymer obtained from phenol and formaldehyde by condensation reaction.
[Structure of Novolac polymer]
New answer posted
10 months agoContributor-Level 10
[MnCl? ]³?
Mn (25) → [Ar] 4s²3d?
Cl? → weak ligand
Mn³? → 3d? i.e. t? g³, eg¹
Hybridization → sp³d² and paramagnetic
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