A sample of `NaHCO_(3)(s)` on heating undergoes `1.845 gm` loss of mass. Approximate mass of `NaHCO_(3)` (in nearest integer) in gm is :

4g of mixture of Na_(2)CO_(3) and NaHCO_(3) on heating liberates 448 ml of CO_(2) at STP. The percentage of Na_(2)CO_(3) in the mixture is

Mixture of MgCO_(3) & NaHCO_(3) on strong heating gives CO_(2) & H_(2)O in 3 : 1 mole ratio. The weight % of NaHCO_(3) present in the mixture is :

Find the mass of Free SO_(3) present in 100gm, 109% oleum sample

An impure sample of As_(2)O_(3) weighitng 20 gm was dissolved in water containing 10 gm of NaHCO_(3) and the final solution was diluted to 400ml . 20ml of this solution was oxidised by 25ml of a solution of I_(2) . Another solution of hypo containing 1.24 gm of Na_(2)S_(2)O_(3).5H_(2)O in 40ml was used to exactly reduce 25 ml of same I_(2) solution (impurities inert). Calculate % of AS_(2)O_(3) in the sample (at. wt. of As=75 )

A 200 gm sample of CaCO_(3) having 40 % purity is heated. Find moles of CO_(2) obtained.

62.5 gm of a mixture of CaCO_(3) and SiO_(2) are treated with excess of HCl and 1.1 gm of CO_(2) is produced. What is mass % CaCO_(3) in the mixture.

90 g of acetic acid react with excess of NaHCO_(3) then what volume of CO_(2) will produce at S.T.P. Write your answer in terms of nearest integer.

Calculate mass of O atoms in 8 gm CH_(3)COOH ?

The ph of blood stream is maintained by a proper balance of H_(2)CO_(3) and NaHCO_(3) concentrations. What volume of 5M NaHCO_(3) solution, should be mixed with 10mL sample of blood which is 2M in H_(2)CO_(3) in order to maintain a pH of 7.4.K_(a) for H_(2)CO_(3) in blood is 7.8 xx 10^(-7) ?

The pH of blood stream is maintained by a proper balance of H_(2)CO_(3) and NaHCO_(3) concentrations. What volume of 5 M NaHCO_(3) solution, shnould be mixed with 10 mL sample of blood, which is 2 M in H_(2)CO_(3) in order to maintain a pH of 7.4 (K_(a)for H_(2)CO_(3) in blood = 7.8xx10^(-7))