Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.

Ex Input:
peroxide in a freezer reserved for laboratory chemicals only. Manganese dioxide is a strong oxidant, avoid contact with organic material. Inhalation can lead to increased incidence of respiratory infection and effects on the central nervous system. It is assumed to be harmful if swallowed. Avoid dust. Wash hands well after handling. How much oxygen gas in grams can be prepared from 58.8g of potassium chlorate? Pure oxygen gas can be prepared in the laboratory by the decomposition of solid potassium chlorate to form solid potassium chloride and oxygen gas. How much oxygen gas in grams can be prepared from 58.8g of potassium chlorate? Give a clear explanation of your answer to get chosen as best. Follow. Oxygen in a gas jar will rekindle a glowing splint Name 3 physical properties of Oxygen Colourless Odourless and Tasteless, Slightly soluble in water, Slightly heavier than air gas, with a density greater than that of air, and a very low solubility in water. properties greatly facilitate the collection of oxygen in this lab. combustion. In this lab, oxygen will be generated as a product of the decomposition of hydrogen peroxide. A catalyst is used to speed up the rate of the decomposition reaction, which would otherwise be too slow to use as We don't won't to put the stopper on the flask just yet. There is about 25 mL of air (80% nitrogen & 20% oxygen) in the flask. The bubbles of oxygen that are forming will displace the air by pushing it out of the flask. Oxygen is a little more dense than air, so oxygen will stay closer to the surface of the water and push the air out of the flask. Wait about 2 minutes before placing the stopper onto the flask. That will give the newly created oxygen to push the most of the air out of the flask. (Iron, for instance, would oxidize, and thus decrease the amount of oxygen given off.) The theoretical maximum efficiency (electricity used vs. energetic value of hydrogen produced) is between 8094%. 2H2O(aq)-- 2H2(g) + O2(g) Prepared in the laboratory by: methane. CH 4. Heating a compound called sodium ethanoate with another compound soda-lime (sodium hydroxide). The methane gas is collected over water. oxygen. O 2. Adding hydrogen peroxide solution to manganese IV oxide powder. The oxygen gas is collected over water. carbon dioxide. CO 2 How do we prepare oxygen in the lab? By decomposing hydrogen peroxide using manganese dioxide as a catalyst What is the word equation for the laboratory preparation of Oxygen? With the help of a diagram explain how oxygen gas is prepared in the laboratory. Set up the apparatus as shown. Add 10 volume hydrogen peroxide slowly via the funnel. Oxygen will pass through the delivery tube. Oxygen is collected by downward displacement of water in the gas jar. With the help of a diagram explain how hydrogen gas is prepared in the laboratory. Set up the apparatus as shown. Add dilute sulphuric or hydrochloric acid slowly via the funnel. Preparation of Gases in Laboratory Aims: To prepare oxygen, hydrogen and carbon dioxide gas in laboratory. Problems : 1. How to prepare oxygen gas in laboratory? 2. How to prepare carbon dioxide gas in laboratory? 3. How to prepare hydrogen gas in laboratory? Hypothesis: 1. Oxygen gas can be prepared in laboratory by using manganese dioxide (MnO2) and hydrogen peroxide (H2O2). 2. Carbon dioxide gas can be prepared in laboratory by using marble chips (CaCO3) and dilute hydrochloric acid (HCl). 3. Hydrogen gas can be prepared in laboratory by using zinc metal and diluted hydrochloric acid (HCl). Variables: Query: how is oxygen prepared in the laboratory?

Ex Output:
Pure oxygen gas can be prepared in the laboratory by the decomposition of solid potassium chlorate to form solid potassium chloride and oxygen gas.


Ex Input:
However, the Earth has been hit by many other large asteroids in the past and have barely registered as life destroyers. In order for an Asteroid to wipe out all life on Earth, it would need to be 60 miles wide according to scientists. Cold Extermination: One of Greatest Mass Extinctions Was Due to an Ice Age and Not to Earth's Warming. 1  Mar. 6, 2017 — The Earth has known several mass extinctions over the course of its history. 2  Aug. 24, 2016 — Extreme global warming 252 million years ago caused a severe mass extinction of life on Earth. Observations about human extinction. Milankovitch cycles describe the way that the earth moves and how the climatic changes vary depending on where the earth is in space. The orbital shape of the earth causes changes every 100,000 years. The axial tilt of the earth wobbles and alters the climate every 41 thousand years. A notable example is Mir, which hosted several long-duration missions of a year or more — including the longest single spaceflight duration of any human to date, 437 days, by Valeri Polyakov in 1994-95. The International Space Station launched its first piece Nov. 20, 1998 and has been continuously occupied by humans since Oct. 31, 2000. If you define “human” as our own species, H. sapiens, then about 180,000 to 200,000 years ago. If you define “human” as the entire genus Homo, then about 2.0 - 2.5 million years ago. If you define “human” as the entire hominid line from the divergence with the Chimpanzee line, then about 6.0–7.0 million years ago. The Universe is 13.7B years old. The Earth has not existed since the moment the Universe was created and is about 4.5B years old and is made out the debris of two previous generation of stars. Life on Earth started shortly after the temperatures cooled down, about 3.7B years ago. Up until 600M years ago, life was predominantly single-celled organisms. From 600M years until now, the variety of life that we see evolved. Humans started to separate from the rest of the great apes about 7M years ago and we became modern humans 200k years ago. Even though evolution is taking place all around us, for many species the process operates so slowly that it is not observable except over thousands or hundreds of thousands of years -- much too long to witness in a human lifetime. Humans will NOT survive another 1,000 years on Earth, says Stephen Hawking: Physicist warns we must 'escape beyond our fragile planet'. Humans will not survive another 1,000 years on 'fragile' Earth, according to Professor Stephen Hawking. The renowned theoretical physicist believes that life on Earth is at an ever-increasing risk of being wiped out by a disaster, such as the increasing threat of artificial intelligence. Most of Earth's life as a habitable planet is over, according to researchers' calculations, which predict that in as little as 1.75 billion years, the planet's orbit will enter a hot zone that will scorch away its oceans. The report, which will be unveiled in Geneva, warns that the wasteful lifestyles of the rich nations are mainly responsible for the exploitation and depletion of natural wealth. Human consumption has doubled over the last 30 years and continues to accelerate by 1.5 per cent a year. Now WWF wants world leaders to use its findings to agree on specific actions to curb the population's impact on the planet. Query: how long will human life on earth last

Ex Output:
Humans will not survive another 1,000 years on 'fragile' Earth, according to Professor Stephen Hawking.


Ex Input:
If the Earth didn't rotate, winds would travel either north or south due to differences in temperature and pressure at different latitudes. But since the Earth does rotate, the Coriolis force deflects these winds to the right in the Northern Hemisphere and to the left in the Southern Hemisphere. Keep Reading Below In the Northern Hemisphere, this deflection causes the wind flow around high pressure systems to go clockwise while flow around low-pressure systems travels counterclockwise. Global winds. Earth’s orbit around the sun and its rotation on a tilted axis causes some parts of Earth to receive more solar radiation than others. This uneven heating produces global circulation patterns. offsite link For example, the Since aircraft cover large distances in a short period of time, pilots must also take its influence into account when charting the paths for their flights. For instance, a plane headed from Miami (where the Earth's rotation is more pronounced) to New York would end up in the Atlantic Ocean if the pilot ignored the effects of the Earth's rotation. 1 2 How do temp & salinity affect the formation of deep currents The colder the temp of water is the higher amound of salinity in the water which makes the water more dense Disasters caused by el niño These global wind patterns drive large bodies of air called air masses. Air masses are thousands of feet thick and extend across large areas of the Earth. The location over which an air mass forms will determine its characteristics. For example, air over the tropical ocean becomes exceptionally hot and humid. Global winds. Earth’s orbit around the sun and its rotation on a tilted axis causes some parts of Earth to receive more solar radiation than others. This uneven heating produces global circulation patterns.offsite link For example, the abundance of energy reaching the equator produces hot humid air that rises high into the atmosphere. With a high-pressure system, air gets forced outward and the Earth's eastward spin creates a clockwise flow. In the Southern Hemisphere, the opposite takes place: Wind around low-pressure systems circles clockwise while wind around high-pressure systems circles counterclockwise. How do continential deflections affect surface currents The shape of continents affect what direction the surface currents go How does temp affect surface cutrents Warm water currents begin at the equator & cold water currents begin closer to the poles Coriolis effect. As they travel across the Earth, air masses and global winds do not move in straight lines. Similar to a person trying to walk straight across a spinning Merry-Go-Round, winds get deflected from a straight-line path as they blow across the rotating Earth. How do convection currents in the air and water affect thermal energy near the equator Currents near the equator carry warmer water How is the density of ocean water affected by temp & salinity Query: how does earth's rotation affect the paths of global winds?

Ex Output:

Earth’s orbit around the sun and its rotation on a tilted axis causes some parts of Earth to receive more solar radiation than others. This uneven heating produces global circulation patterns.


