Chemistry

The density of NaOH solution is 1.2 gm cm⁻³. The molality of this solution is _______ m. (Round off to the Nearest integer) [Use: Atomic masses: Na 23.0u O: 16.0 u H:1.0 u Density of H₂O: 1.0g cm⁻³]

For the following graphs,
Choose from the options given below, the correct one regarding order of reaction is:

The difference between bond orders of CO and NO⁺ is x/2 where x is _______. (Round off to the Nearest integer)

PCl₅ ⇌ PCl₃ + Cl₂ Kc = 1.844. 3.0 moles of PCl₅ is introduced in a 1L closed reaction vessel at 380K. The number of moles of PCl₅ at equilibrium is _______ * 10⁻³. (Round off to the Nearest integer)

CO₂ gas adsorbs on charcoal following Freundlich adsorption isotherm. For a given amount of charcoal, the mass of CO₂ adsorbed becomes 64 times when the pressure of CO₂ is doubled. The value of n in the Freundlich isotherm equation is _______ * 10⁻². (Round off to the Nearest integer)

Sodium stearate CH?(CH?)?COO?Na? is an anionic surfactant which forms micelles in oil. Choose the correct statement for it from the following:

1.46 g of a biopolymer dissolved in a 100 mL water at 300 K exerted an osmotic pressure of 2.42 * 10⁻³ bar. The molar mass of the biopolymer is _______ * 10⁴ g mol⁻¹. (Round off to the Nearest integer) [Use: R = 0.083 L bar mol⁻¹ K⁻¹]

The correct order of following 3d metal oxides, according to their oxidation numbers is:
(a) CrO?
(b) Fe?O?
(c) MnO?
(d) V?O?
(e) Cu?O

An organic compound is subjected to chlorination to get compound A using 5.0 g of chlorine. When 0.5 g of compound A is reacted with AgNO₃ [Carius Method], the percentage of chlorine in compound A is _______ when it forms 0.3849 g of AgCl (Round off to the Nearest integer) (Atomic masses of Ag and Cl are 107.87 and 35.5 respectively)

In gaseous triethyl amine the "-C-N-C-" bond angle is _______ degree.