Directions. Prep. Cook. Ready In. 1  Preheat the oven to 500 degrees F (260 degrees C). 2  Season the roast with salt and pepper and place in a roasting pan or baking dish. 3  Do not cover or add water.4  Place the roast in the preheated oven.5  Reduce the temperature to 475 degrees F (245 degrees C).eady In. 1  Preheat the oven to 500 degrees F (260 degrees C). 2  Season the roast with salt and pepper and place in a roasting pan or baking dish. 3  Do not cover or add water. 4  Place the roast in the preheated oven. 5  Reduce the temperature to 475 degrees F (245 degrees C).
The Atmosphere of Venus The atmosphere of Venus is mostly carbon dioxide, 96.5% by volume. Most of the remaining 3.5% is nitrogen. Early evidence pointed to the sulfuric acid content in the atmosphere, but we now know that that is a rather minor constituent of the atmosphere. The mass of the Venus atmosphere is about 90 times that of the Earth's atmosphere. 90% of the Earth's atmosphere is within 10 km of the surface, whereas you have to go to 50 km to capture 90% of the atmosphere of Venus. The clouds of Venus may extend from about 50 to 70 km and may be divided into three distinct layers.
The atmospheric pressure at the surface of Venus is about 90 times that of Earth's (90 atm). This atmosphere consists mainly of carbon dioxide, which is a gas that is not breathable.In addition, the clouds of Venus contain drops of sulfuric acid, a poisonous chemical.ecause of Venus' heavy atmosphere, the planet's surface pressure is very high. Pressure is defined as the weight of the atmosphere pressing down on you per unit area. On Earth, we don't notice the air pressure at all. The thick atmosphere on Venus would make it difficult to see objects very far away from you.