Nitrogen monoxide reacts with oxygen to given nitrogen dioxide as shown in the chemical equation. The rate law is - Δ [NO] / Δt=k[NO]² [O₂]

2NO+O₂→2NO₂

k=1.16x10⁻⁵ L²/(mole²*s) at 339 degrees Celsius and the initial pressure of NO is 155 mm Hg and for O₂ it is 345 mm Hg. What is the rate of decrease for NO?

Explain why scientists use shared characteristics to make cladograms.

7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.

Helium decays to form lithium. which equation correctly describes this decay?