A pure sample of `CaCO_(3)` contain 100 moles of total atoms. What is the mass of sample-

Number of moles of CaCO_(3) which contain 1.5 moles of oxygen atoms is

A sample of MgSO_(4) contains 8 xx 10^(20) 'O' atoms what is the mass of 'S' in the sample ?

A sample of MgSO_(4) contains 8 xx 10^(20) 'O' atoms what is the mass of 'S' in the sample ?

A 1000 gram sample of NaOH contains 3 mole of O atoms, what is the % purity of NaOH :

A 1000 gram sample of NaOH contains 3 mole of O atoms, what is the % purity of NaOH :

A 1000 gram sample of NaOH contains 3 mole of O atoms, what is the % purity of NaOH :

Two pure samples of atoms, labeled A and B, contain oxygen atoms and carbon atoms, respectively. Each sample contains the same number of atoms. What is the ratio of the mass of sample B to that of sample A, m_B//m_A ? Note the following atomic masses: C = 12 u, 0= 16 u,

A sample of PCl_(3) contains 1.4 moles of the substance. How many atoms are there in the sample?

500 g impure sample of CaCO_(3) on heating gives 70 g of CaO . Percentage impurities in sample is