Density
Trending Questions
Q. What is a SPACE LATTICE
Q. 40. Molybdenum (molar mass 96) crystallize as bcc crystal if density of crystal is 10.3 then radius of Mo atom is (Na= 610*23) take cube root of 31= 3.2
Q. 38. The effective radius of iron atom is 1.42 Angstrom. It has rock salt like structure, Calculate its density(Fe=56smu)?
Q. which of the following combination of volumes (mL) of C2H4(g) and O2(g)respectivelyis required to obtain 400mL of CO2 (g).all volumes are measured at STP
Q.
If you have 2 moles of A and 3 moles of B, Identify the limiting reagent in the following reaction.
A + B → AB
B
A as well as B
A
None
Q. CsBr crystallises in a body centered cubic lattice. The unitcell length is 436.6 pm. Given that the atomic mass of Cs=133 and that of Br =80 amu. the density of CsBr is (a) 0.425 g/cm3(b) 4.25 g/cm() 8.5 g/cm3(d) 82.5 g/cm3
Q. 10. If the molar volume of KCl and NaCl are x ml and y ml respectively then the ratio of the edge length of Fcc unit cell of KCl and NaCl will be ?
Q. 17. nack crystallises in bcc arrangement with interfacial separation between atoms at the edge 53pm.the density of the solid in g/cc is 1)1.23 2)485 3)4.85 4)123
Q.
Liquid water is denser than solid ice - True or False?
False
True
Q.
What is the molecular volume of hydrogen?
Q. 78. What volume of ccl4 having density 1.6 gram per CC contain 6.02 into 10 to the power 25 ccl4 molecules?
Q. 9. What will be the partial pressure of He and O2 respectively, if 200ml of He at 0.66atm and 400ml of O2 at 0.52atm pressure are mixed in 400ml vessel at 20 degree Celsius?
Q. Q 10/15 The number of atoms in 50 g of bcc crystal with density 5 g cm-3 and edge length 100 pm is 3 1024 4 x 1025 5 x 1024 2 x 1025
Q. Density of an object is }3g/cm^3 . Express it in }kg/m^3
Q. A molecule A2B (molar mass = 166.4) occupies a triclinic lattice with a = 5 ∘A, b = 8 ∘A, and c = 4 ∘A. If the density of A2B is 5.2 gcm−3, the number of molecules present in one unit cell is:
(Take NA=6×1023)
(Take NA=6×1023)
- 2
- 3
- 4
- 5
Q. Q 97/200 If N204 dissociates to 60% intoNO2 at 90^° C then vapour density ofequilibrium mixtur is
Q. What is the meaning of lattice point?
Q. 7.Molarity of pure D20 (density of D2O is 1gm/ml)
Q. The vapour density of a mixture of NO_2 and N_2O_4 is 39 at 25^° C. What is the mass of NO_2 present in 100 g of the mixture? ( 1)17.9 g (2) 8.4 g (3) 33.2 g (4) 66.4 g
Q. Which of the following relation is correct?(1) Volume strength of H2O2-56% Normality(2) Volume strength of H2O2 11.2x Molarity(3) 100 volume, H2O230% H2O2(4) All of these
Q. is CsI have more lattice energy then CsF? how
Q. 9. The nucleus of an atom X is supposed to be a sphere with a radius 5×18*-13cm .find the density of matter in atomic nucleus. If atomic weight of X is 19 6.02×10*23 6.02×10*12 6.02×10*13 6.02×10*11
Q. 25 Which is more soluble in water MgF2 or CaF2 and why??
Q. Assertion :(A) : Alkali metals are soft and have low melting and boiling points. Reason: (R) : This is because interatomic bonds are weak.
- Both (A) and (R) are not true
- (A) is true but (R) is not correct explanation of (A)
- (A) is true but (R) is ture
- Both (A) and (R) are true and (R) is correct explanation of (A)
Q. 19. The density of a gas is 1.27 gL-1 at 50C and 0.987 x 105 Pa. Calculate its molar mass.
Q. A solid AB has CsBr structure. If M is the formulamass of AB, then the density of unit cell of AB is(NA : Avogadro number, a = edge length of unit cell)2 x M2) N xa33 x M(3) N xa4M(4) N. xaho highest melting
Q. Volume strength of H2O2 is 5.6, its normality will be
Q. 2. What is volume strength of water?
Q. 28. Three atoms A, B and C crystallize in a cubic solid lattice where A atoms are present at the body centre, B atoms are present at the edge centre as well as the corners of the cube and C atoms are present at the face centres of the cube. Now if all the atoms are removed from the two 4-fold axis and the one 2-fold axis passing through the cube, then the formula of the compound is 1)B7C2 2)AB2C7 3)ABC2 3)A5C2
Q. 31. 12.044 ×10*23 molecule of oxygen calculate the mass of it