\[ \mathrm{Fe_2O_{3(s)} + 2Al_{(s)} \rightarrow Al_2O_3 + 2Fe_{(s)}} \] If the heats of formation of \( \mathrm{Al_2O_3} \) and \( \mathrm{Fe_2O_3} \) are -...

What is the concentration of H+ ions in moles per dm3 of a sodium of pH 4.398?

10.0 dm3 of air containing H2S as an impurity was passed through a solution of Pb(NO3)2 until all the H2S had reacted. The precipitate of PbS was found to we...

0.1 faraday of electricity deposited 2.95 g of nickel during electrolysis of an aqueous solution. Calculate the number of moles of nickel that will be deposi...

If 10.8 g of silver is deposited in a silver coulometer volume of oxygen liberated is?

2.0g of a monobasic acid was made up to 250 cm3 with distilled water. 25.00 cm3 of this solution required 20.00cm3 of 0.1 M NaOH solution for complete neutra...

What volume of 11.0 M hydrochloric acid must be dilute to obtain 1 dm3 of 0.05 M acid?

Chlorine, consisting of two isotopes of mass numbers 35 and 37, has an atomic mass of 35.5. The relative abundance of the isotope of mass number 37 is?

The Avogadro number of 24g of magnesium is the same as that of