`2.0g` of a tri-atomic gaseous element was found to occupy a volume of `448ml` at `76` cm of Hg and `273K`. The mass of its atom is?
`33.3am u`
`5.53times10^(-23)g`
`66.6am u`
`5.53am u`

20g of ideal gas contains only atoms of S and O occupies 5.6 L at 1 atm and 273K. what is the molecular mass of gas ?

20g of ideal gas contains only atoms of S and O occupies 5.6 L at 1 atm and 273K. what is the molecular mass of gas ?

40 mg of gaseous substance ( X_(2) ) occupies 4.8 mL of volume at 1 atm and 27^(@) C. Atomic mass of element X is : (R:0.08 atm L/mole- k )

A certain gas 'X' occupies a volume of 100 cm^(3) at STP and weighs 0.5 g. Find its relati ve molecular mass.

A certain gas 'X' occupies a volume of 100 cm^(3) at S.T.P. and weighs 0.5 g. Find its relative molecular mass.

A substance having mass 5.74 g occupies a volume of 1.2cm^3. Caluclate its density with due regard to significant digits.

3.011 xx 10^22 atoms of an element weighs 1.15 gm . The atomic mass of the element is : (a) 10amu (b) 2.3amu (c) 35.5amu (d) 23amu

Density of a unit cell is respresented as rho = (" Effective no. of atoms (s)" xx "Mass of a unit cell ")/("Volume of a unit cell ")=(Z.M)/(N_(A).a^(3)) where , Z =mass of effective no . of atoms(s) or ion (s). M= At . mass// formula N_(A) = Avogadro' s no . rArr 6.0323 xx 10^(23) a= edge length of unit cell An element crystallizes in a structure having fcc unit cell of an edge 200 pm . Calculate the density , if 100 g of this element contains 12xx10^(23) atoms :

A sample of a hydrate of barium chloride weighing 61 g was heated until all the water of hydration is removed. The dried sample weighed 52 g. The formula of the hydrated salt is: (atomic mass, Ba = 137 am u, Cl = 35.5 am u)

A: 1 "a.m.u." = 1.66 xx 10^(-24) gram. R: Actual mass of one atom of C-12 is equal to 1.99 xx 10^(-23) g