Calcium carbide (CaC2) can be made by heating calcium oxide…
Calcium carbide (CaC2) can be made by heating calcium oxide (lime) with carbon (charcoal). CaO(s) + 3C(s) ” CaC2(s) + CO(g); ΔHo = +464.8 kJ How much heat, in joules, is absorbed in a reaction in which 2.50 mol C(s) is consumed under these conditions?
Read DetailsWhen 1.045 g of BaO is added to 100.0 ml of water at 22.0 oC…
When 1.045 g of BaO is added to 100.0 ml of water at 22.0 oC in a coffee-cup calorimeter, the temperature of the water increases to 25.7 oC. Assume that the specific heat and density of the solution is 4.184 J/g∙oC and 1.00g/ml, respectively. The heat capacity of the calorimeter is 25.0 J/oC. Calculate ΔH for the reaction. BaO(s) + H2O(l) → Ba(OH)2(aq); ΔH = __________
Read DetailsAir bags are activated when a severe impact causes a steel b…
Air bags are activated when a severe impact causes a steel ball to compress a spring and electrically ignite a detonator cap. This causes sodium azide (NaN3) to decompose explosively according to the following reaction: 2NaN3(s) ® 2Na(s) + 3N2(g) What mass of NaN3(s) must be reacted in order to inflate an air bag to 75.0 l at STP?
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