What is the molecular mass of a compound `X`, if its `3.0115 xx 10^(9)` molucules weigh `1.0 xx 10^(-12) g?`

Calculate the number of moles in 3.0115 xx 10^(23) atoms of calcium.

The uncertainity in the position of an electron (mass 9.1 xx 10^(28)g ) moving with a velocity of 3.0 xx 10^(4) cm^(-1) accurate up to 0.011%, will be

The wave length of a electron with mass 9.1 xx 10^(-31)kg and kinetic energy 3.0 xx 10^(-25)J is

The mass of an electron is 9.1 xx 10^(31) kg if its K.E. Is 3.0 xx 10^(25) J calculate its wavelength .

A compound contains 7 carbon atoms, 2 oxygen atoms and 1.0 xx 10^(-23) gmof other elements. The molecular mass of compound is : (N_(A) = 6 xx 10^(23))

The uncertainty in the position of an electron ("mass "9.1 xx 10^(-28)g) moving with a velocity of 3.0 xx 10^(4)cm^(-1) accurate up to 0.011% , will be

The mass of an electron is 9.1 xx 10^(-31)J , if its K.E. is 3.0 xx 10^(-25)J . Calculate its wavelength.

Each molecular of a compound contains 5 carbon atoms, 8 hydrogen atoms and 4 xx 10^(-23) gm of other element. The molecular mass of compounds is (N_(A) = 6 xx 10^(23))