Recent questions tagged sat

The Vacant space in body centered cubic lattice b.c.c unit cell is about

asked Feb 27, 2014 by sharmaaparna1

2 answers

For a spontaneous reaction, the $\Delta G$, equilibrium constant, K and $E^\circ _{cell}$ will be respectively

asked Feb 26, 2014 by mosymeow_1

1 answer

Which of the following condition depicts a favourable condition for a spontaneous reaction?

asked Feb 25, 2014 by mosymeow_1

1 answer

For the following thermodynamic process Dry ice $\longrightarrow CO_2$ (g)

asked Feb 24, 2014 by mosymeow_1

2 answers

The value of $\Delta S$ is negative in which of the following process?

asked Feb 24, 2014 by mosymeow_1

2 answers

At constant volume the heat of combustion of solid benzoic acid is -321.30 kJ at $27^\circ C$. The heat of combustion at constant pressure is

asked Feb 23, 2014 by mosymeow_1

1 answer

$HNO_3$ used as a reagent has specific gravity of $1.42 mL^{-1}$ and contains $70\%$ by strength $HNO_3$. Calculate Volume of acid that contains 63g pure acid.

asked Feb 11, 2014 by sharmaaparna1

1 answer

An oil drop has $-6.39\times10^{-19}$ coulomb charge .The number of electrons in this oil drop is

asked Feb 9, 2014 by sharmaaparna1

1 answer

Calculate the shortest and longest wavelength in H spectrum of Lyman series. $R_H = 109678 cm^{-1}$

asked Feb 7, 2014 by sharmaaparna1

1 answer

If the radius of first Bohr orbit of hydrogen atom is 'x' then de Broglie wavelength of electron in $3^{rd}$ Orbit is nearly

asked Feb 7, 2014 by sharmaaparna1

1 answer

Calculate the maximum wavelength in $A^{\large\circ}$ a photon that can initiate the reaction. $Cl_2(g)\rightarrow 2cl(g), \bigtriangleup H = 247$ KJ/mol

asked Feb 6, 2014 by sharmaaparna1

1 answer

Calculate the wavelength of a helium atom whose speed is equal to root mean square speed at 293 K $(rms = \sqrt{3RT/m})$

asked Feb 4, 2014 by sharmaaparna1

1 answer

Atomic radius is of the order of $10^{-8} cm$ and nuclear radius is of the order of $10^{-13}$ cm. calculate what fraction of atom is occupied by nucleus?

asked Jan 31, 2014 by sharmaaparna1

1 answer

What is the principal quantum no. of H-atom Orbital if the electron energy is -3.4 eV ? also report the angular momentum of electron

asked Jan 31, 2014 by sharmaaparna1

1 answer

Calculate the largest wavelength which can remove the electron from 1 Bohr's orbit. Given $E_1$ = 13.6 eV

asked Jan 30, 2014 by sharmaaparna1

1 answer

A compound of Vanadium has a magnetic moment of 1.73 Bm. Work out the electric configuration of the Vanadium ion in the compound.

asked Jan 28, 2014 by sharmaaparna1

1 answer

If the electron energy is -3.4 eV , Find the principal quantum number of H-atom?

asked Jan 24, 2014 by sharmaaparna1

1 answer

An ion $Mn^{a+}$ has the magnetic moment equal to 4.9bm. What is the value of a ?

asked Jan 24, 2014 by sharmaaparna1

1 answer

Calculate the uncertainty in velocity of an electron if the uncertainty in its position is of the order of $1A^{\large\circ}$

asked Jan 17, 2014 by sreemathi.v

1 answer

The binding energy of electrons in a metal is 250KJ/mol.What is the threshold frequency of metal ?

asked Jan 17, 2014 by sreemathi.v

1 answer

Calculate momentum of radiations of wavelength 0.33nm

asked Jan 16, 2014 by sreemathi.v

1 answer

What electron transition in a hydrogen atom,starting from the orbit $n=7$ will produce infrared light of wavelength 2170nm?( $R_H=1.09677\times 10^7m^{-1})$

asked Jan 16, 2014 by sreemathi.v

1 answer

If uncertainties in the measurement of position and momentum are equal,calculate uncertainty in the measurement of velocity.

asked Jan 16, 2014 by sreemathi.v

1 answer

Calculate the uncertainty in velocity of an electron if uncertainty in its position is of the order of $1A^{\large\circ}$

asked Jan 16, 2014 by sreemathi.v

1 answer

Calculate the momentum of electron moving with $\large\frac{1}{3}$rd velocity of light

asked Jan 15, 2014 by sreemathi.v

1 answer

Calculate the wavelength of moving electron having $4.55\times 10^{-25}$Joule of kinetic energy

asked Jan 15, 2014 by sreemathi.v

1 answer

What transition in the hydrogen spectrum would have the same wavelength as the Balmer transition n=4 to n=2 of $He^+$ spectrum ?

asked Jan 15, 2014 by sreemathi.v

1 answer

The ionization energy of H atom is $13.6eV$.What will be ionization energy of $He^+$ and $Li^{2+}$ ions?

asked Jan 15, 2014 by sreemathi.v

1 answer