Embibe Experts Solutions for Chapter: Stoichiometry (Mole Concept), Exercise 1: TS EAMCET 2021 (04-Aug Shift-1)

The number of grams of oxygen in $32.2 \mathrm{g}$ of ${\mathrm{Na}}_2{\mathrm{SO}}_4·10{\mathrm{H}}_2\mathrm{O}$ is approximately

The number of sodium ions present in $0.5$ mole of sodium ferrocynide is?

An organic compound contains $60\%\mathrm{C}; 4.48\%\mathrm{H}$ and $35.5\% \mathrm{O}.$ Its empirical formula is

When $10 \mathrm{g}$ of $90\%$ pure limestone is heated, the approximate volume (in $\mathrm{L}$) of ${\mathrm{CO}}_2$ liberated at $\mathrm{STP}$ is:

A $90 \mathrm{g}$ of ethyl amine on reaction with methyl chloride produced a tertiary amine as an exclusive product. The amount of methyl chloride required is
[Given mass in amu : $\mathrm{H}=1, \mathrm{C}=12, \mathrm{N}=14, \mathrm{Cl}=35.5$]

A litre of seawater (which weighs $1030 \mathrm{g}$) contains $6\times {10}^{-3} \mathrm{g}$ of dissolved oxygen. The concentration of dissolved oxygen in $\mathrm{ppm}$ is:

What is the equivalent weight of methanol if one mole of ${\mathrm{CH}}_3\mathrm{OH}$ is combusted to form $\mathrm{CO}$ and ${\mathrm{H}}_2\mathrm{O}$:

While combusting in air, $4 \mathrm{g}$ of ${\mathrm{H}}_2$ gas was completely converted into water. If $36\mathrm{\mu mole}$ of ${\mathrm{CO}}_2$ from air is dissolved into that water, what is the concentration of ${\mathrm{CO}}_2$ ?