Stoichiometric relationships Questionbank

What is the percentage yield when 2.0 g of ethene, $C_2H_4$, is formed from 5.0 g of ethanol, $C_2H_5OH$?
$M_r$(ethene) = 28; $M_r$(ethanol) = 46

What is the volume of gas when the pressure on 100 $\mathrm{cm}^3$ of gas is changed from 800 $\mathrm{kPa}$ to 200 $\mathrm{kPa}$ at constant temperature?

Which volume of ethane gas, in $\mathrm{cm}^3$, will produce 40 $\mathrm{cm}^3$ of carbon dioxide gas when mixed with 140 $\mathrm{cm}^3$ of oxygen gas, assuming the reaction goes to completion?

$2C_2H_6( )g+7O_2( g)→4CO_2( g)+6H_2O( g)$

Which graph would not show a linear relationship for a fixed mass of an ideal gas with all other variables constant?

Which factors affect the molar volume of an ideal gas?

I. Pressure
II. Temperature
III. Empirical formula

What is the concentration of chloride ions, in $\mathrm{mol \, dm}^{-3}$, in a solution formed by mixing 200 $\mathrm{cm}^3$ of 1 $\mathrm{mol \, dm}^{-3}$ HCl with 200 $\mathrm{cm}^3$ of 5 $\mathrm{mol \, dm}^{-3}$ NaCl?

Which expression represents the density of a gas sample of relative molar mass, $M_{r}$, at temperature, $T$, and pressure, P ?

$w \mathrm{C}_{4} \mathrm{H}_{9} \mathrm{OH}+x \mathrm{O}_{2} \rightarrow y \mathrm{CO}_{2}+z \mathrm{H}_{2} \mathrm{O}$

When this equation is balanced correctly, the coefficient, $x$, for $\mathrm{O}_{2}$ is