You find an object that is made of a pure metal. What could you do to identify which metal the object is made of?
Determine is shape and compare it to the shape of other metals
O Determine its density and compare it to the density of other metals
Measure its length and compare it to the length of other metals
O Measure its mass and compare it to the mass of other metals

Nitric oxide (no) can be formed from nitrogen, hydrogen and oxygen in two steps. in the first step, nitrogen and hydrogen react to form ammonia: n2(g) + 2 h_2(g) rightarrow 2 nh_3 (g) delta h = -92. kj in the second step, ammonia and oxygen react to form nitric oxide and water: 4 nh_3(g) + 5 o_2(g) rightarrow 4no(g) + 6 h_2o(g) delta h = -905. kj calculate the net change in enthalpy for the formation of one mole of nitric oxide from nitrogen, hydrogen and oxygen from these reactions. round your answer to the nearest .

Calculate the number of moles of ethane in 100 grams

Geothermal energy for industrial use is available almost anywhere. a.true b.false