Zachary wants to model a landform that changed due to earthquakes and wind erosion. Which model is most appropriate for him to use?
an illustratic showing the original appearance of the landform
a diagram showing cracks in the Earth from an earthquake
an oversimplified diagram depicting the cause of the earthquake
an illustration including only the contribution of wind erosion to the landform change

Find the mass in grams of hydrogen gas produced when 14.0 moles of hcl is added to an excess amount of magnesium.

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 .

What is the polyatamic ion of thiosulfate