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what is the diffrence between molarity and normality

If a certain amount of slaked lime (Ca(OH)2) on heating gave 33.6 L of H2O vapour at STP, then what is the number of moles of slaked lime we had?

 

At 300 K and 1 atmsopheric pressure, 10 mL of a hydrocarbon required 55 mL of O_{2}

for complete combustion, and 40 mL of CO_{2}  is formed. The formula of the hydrocarbon is:

Given the reaction : 

C_{2}H_{5}OH\; +\; 3O_{2} \rightarrow\; 2CO_{2}\; +\; 3H_{2}O

How many grams of H2O is produced when 92g of C2H5OH is burnt?

1 gram of a carbonate (M2CO3) on treatment with excess HCl produces 0.01186 mole of CO2.  The molar mass of M2CO3 in g mol−1 is :

50 mL of 0.5 M oxalic acid is needed to neutralize 25 mL of sodium hydroxide solution. The amount of NaOH in 50 mL of the given sodium hydroxide solution is :

19.9%of all boron atoms are 5B10 , 80.1% are 5B11. The approximate atomic mass of boron is

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