Addition of lyophilic sols. to lyophobic colloid, forms —

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0.4686g of a metal oxide yields on reduction 0.3486g of the metal which forms an alkali double sulphate isomorphous with common alum. Find the atomic weight of the metal.

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Show that addition, subtraction and multiplication are binary operations on R, but division is not a binary operation on R. Further, show that division is a binary operation on the set R. of non zero real numbers.

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Show that addition and multiplication are associative binary operations on R. But subtraction is not associative on R. Division is not associative on R.

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Show that zero is the identity for addition on R but 1 is the identity for multiplication on R. But there is no identity element for the operations $-: R \times R \rightarrow R$ and $\div: R . \times R, \rightarrow R$.

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If 6.3 g of NaHCO3 are added to 15.0 g of CH3COOH solution, the residue is found to weight 18.0 g. What is the mass of CO2 released in this reaction?

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Assuming 100% yield of the reaction, how many moles of NaHCO3 will produce 448 mL of CO2 gas at STP according to the reaction —

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According to Bohr's theory of hydrogen atom., the product of the binding energy of the electron in the nth orbit and its radius in the nth orbit.

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A Chemical equation is balanced according to the law of —

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An organic compound on analysis was found to contain 0.032% of Sulphur by mass. The molecular mass of the compound, if its one molecule contains two Sulphur atoms, is :

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The density of water at $4^{\circ} C$ is $1 \times 10^{3} kg m ^{-3}$. Assuming no empty space to be present between water molecules, the volume occupied by one molecule of water is approximately :

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Addition of lyophilic sols. to lyophobic colloid, forms —

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