chemical-aritmatic

Related Questions

• Boron has two stable isotopes, $^{10}B$(19%) and $^{11}B$(81%).The atomic mass that should appear for boron in the periodic table is

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• The amount of water that should be added to 500 ml of 0.5 N solution of $NaOH$to give a concentration of 10 mg per ml is

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• $KMn{O_4}$ reacts with oxalic acid according to the equation, $2MnO_4^ - + 5{C_2}O_4^{2 - } + 16{H^ + } \to 2M{n^{2 + }} + 10C{O_2} + 8{H_2}O$, here 20 ml of 0.1 M $KMn{O_4}$ is equivalent to

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• The mass of a molecule of water is

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• What weight of $S{O_2}$can be made by burning sulphur in 5.0 moles of oxygen

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