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Stoichiometry

Stoichiometry
Assuming that CO₂ obeys perfect gas law, calculate the density of CO₂ (in kg/m³) at 263°C and 2 atm.

3
1
4
2

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Stoichiometry
A sample of well water contains 140 gm/m³ Ca²⁺ ions and 345 gm/m³ Na⁺ ions. The hardness of the sample of water, expressed in terms of equivalent CaCO₃ in gm/m³ is (assuming atomic masses of Ca :40, Na : 23, C : 12, O : 16)

345
485
350
140

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Stoichiometry
The increase in the temperature of the aqueous solution will result in decrease of its

Mole fraction of the solute
Molality
Weight % of the solute
Molarity

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Stoichiometry
Vapor pressure of water at 100°C is about __________ bar.

0.1013
10.13
101.3
1.013

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Stoichiometry
Concentration of a solution expressed in terms of __________ is independent of temperature.

None of these
Molarity
Molality
Normality

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Stoichiometry
Avogadro's number is equal to

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