Chlorine is prepared in the laboratory by treating manganese dioxide (MnO2) with aqueous hydrochloric acid according to the reaction 4HCl(aq)+MnO2(l)+MnCl2(aq)+Cl2(g) How many grams of HCl react with 5.0 g of manganese dioxide?
Calcium carbonate reacts with aqueous HCl to given CaCl2 and CO2 according to the reaction, CaCO3(s)+2HCl(aq)→CaCl2(g)+CO2(g)+H2Ol What mass of CaCO3 is required to react completely with 25 mL of 0.75 M HCl?
A welding fuel gas contains carbon and hydrogen only. Burning a small sample of it in oxygen gives 3.38 g carbon dioxide, 0.690 g water and no other products. A volume of 10.0 L (measured at STP) of this welding gas is Read More …
Calculate the number of atoms in each of the following (i) 52 moles of Ar (ii) 52 u of He (iii) 52 g of He.