How many times is the rms speed of molecules in 8gm o2? here, R = 8.314 J/moleK = 8.314 kg m²./ s² , M = molar mass, T = temperature in kelvin. The rms speed of a gas changes if its temperature changes. there is no effect pressure and the weight of gas on the […]
What is killing the Great Barrier Reef?
What is killing the Great Barrier Reef? Australia’s Great Barrier Reef has lost more than half of its corals since 1995 due to warmer seas driven by climate change, a study has found. Scientists found all types of corals had suffered a decline across the world’s largest reef system. The steepest falls came after mass […]
What happens when you mix sulfur and chlorine?
What happens when you mix sulfur and chlorine? If a stream of chlorine is passed over some heated sulphur, it reacts to form an orange, evil-smelling liquid, disulphur dichloride, S2Cl2. Is sulfur dichloride toxic? Chemical dangers This produces toxic and corrosive fumes including hydrogen chloride and sulfur oxides. Reacts violently with strong oxidants, acetone and […]
Did 1910 houses have electricity?
Did 1910 houses have electricity? By 1910, many suburban homes had been wired up with power and new electric gadgets were being patented with fervor. Vacuum cleaners and washing machines had just become commercially available, though were still too expensive for many middle-class families. Chemistry also charged full steam ahead in 1910. When was electricity […]
What is the net force in this diagram?
When is best time to salt driveway?
When is best time to salt driveway? The best time to treat the ground is before snowfall begins. Treating areas before snow (and freezing rain/ice) begins can help prevent ice from forming and prevent snow from settling. Because salt has a lower freezing point than water, it reduces the opportunities for moisture to freeze on […]
How do we respond to a stimulus?
How do we respond to a stimulus? They detect a change in the environment stimulus. In the nervous system this leads to an electrical impulse being made in response to the stimulus….Receptors. Sense organ Stimuli receptors respond to Nose Chemicals (in the air, for example) Eye Light Ear Sound, position of head What does stimulus […]
What Colour does argon glow?
What Colour does argon glow? Color Gas Color Helium White to orange; under some conditions may be gray, blue, or green-blue. Neon Red-orange Argon Violet to pale lavender blue Krypton Gray, off-white to green. At high peak currents, bright blue-white. Which gas is lowest in atmosphere? According to NASA, the gases in Earth’s atmosphere include: […]
What was the last period of dinosaurs?
What was the last period of dinosaurs? Cretaceous Period What were the two major types of dinosaurs? With the discovery of many new species since the 1840s, the Dinosauria now contains two major groups of dinosaurs: the Ornithischia, or “bird-hipped” dinosaurs, and the Saurischia, or “lizard-hipped” dinosaurs. The division between the two groups was made […]
What instrument is used to collect humidity?
What instrument is used to collect humidity? hygrometers What instrument is used to collect wind speed data? anemometer How is weather data collected? Collecting Data Weather instruments collect data from all over the world at thousands of weather stations (figure below). Many are on land, but some float in the oceans on buoys. Weather stations […]