what happens when sodium is burnt in air​

Answers

Answer 1
In ordinary air, sodium metal reacts to form a sodium hydroxide film, which can rapidly absorb carbon dioxide from the air, forming sodium bicarbonate. ... In a comparatively dry atmosphere, sodium burns quietly, giving off a dense white caustic smoke, which can cause choking and coughing. Sodium reacts both with air and water. It is a highly reactive metal. When kept in open, it readily combines with oxygen present in air to form its oxide. ... In order to preserve sodium metal, we generally keep it under kerosene so that neither air nor moisture may come in its contact. Sodium reacts with the oxygen in air to form an oxide called the sodium oxide, and traces of yellow sodium peroxide. Therefore, the sodium metal should be immersed in kerosene oil, if it is kept open it reacts vigorously with oxygen and the moisture that is already present in the air and thus catches fire.

Related Questions

give three impacts of migration positive and negative. ​

Answers

Answer:

Positive :

1. increased cultural diversity

2. skill gaps are filled

3. growth in local economy

Negative :

1. overcrowded areas

2. language and cultural gap

3. increase in pollution

Explanation:

The capital of Germany is called​

Answers

Answer:

berlin

Explanation:

Answer:

The capital of Germany is Berlin

Explanation:

Can someone help me out this in a sentence and also put it organize plz

Answers

While the children watched the ball game, they talked about the players and traded baseball cards.

Explanation:

Explain 2 reasons why India is developing very fast. (4 marks) You need to add detail.

Answers

Answer:

Tourism contributes 6% of India's GDP and employs 40 million people , making it an important factor in India's economic growth.

There is more than one way to add up coins. Fill in the blanks to show two ways to make this amount: $1.36

Answers

Answer:

£1.00+ 30P        50p+50p+36p

Explanation:

Examine how human and physical processes have impacted a river landscape you have studied

Answers

Answer:    

Explanation:

Human activities such as urbanization, farming, logging, industrialization , etc. have a significant impact on river landscapes and rivers .

URBANIZATION :  Surfaces that were normally permeable have become impermeable due to the use of materials such as concrete . Water cannot infiltrate these surfaces which leads to increase in surface run- off .  Drains quickly transfer water to rivers leading to increase in river discharge.Due to more water entering the river channel  rivers are more likely to flood .Now  humans are more likely to manage the rivers to reduce the risk of flooding . The construction of river defenses have significant impact on rivers and river landscapes.

INDUSTRIALIZATION : The development of industries also leads to increase in impermeable surfaces  leading to greater surface run - off.

Pollution from factories and vehicles can lead to increase in chemical weathering and thus making rainfall more acidic .

AGRICULTURE :

Farming also have bad effects on rivers and river landscapes in number of ways . Water is extracted from rivers for irrigation  which leads to reduce in volume of water within the channels . Deposition is likely to occur with decrease in the volume of water in the rivers.

Difference between developed and developing countries?

Answers

Answer:

Developed countries are generally categorized as countries that are more industrialized and have higher per capita income levels.

Developing countries.are generally categorized as countries that are less industrialized and have lower per capita income levels.

The difference between developed and developing countries is that developed countries have advanced resources and techniques whereas developing countries are in the learning phase.

What are Developed countries?

The term "Developed Country" refers to an economy with a significant rate of urbanization and per capita income. An industrialization pace that is slow and the per capita income is low define a country as a developing country.

Developing countries have high rates of infant mortality, death, and birth, as well as low life expectancy rates, in contrast to industrialized nations, which have low rates of infant mortality, death, and birth and high life expectancy rates.

In contrast to developing countries, industrialized countries generate greater revenue from the industrial sector.

Learn more about developing countries, here:

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Explain how one of the four types of evidence helps prove that the plates are in
motion. (Hint: Wegener came up with some of them)

Answers

Answer:

Each of the pieces of evidence offers several aspects that firmly prove that the plates are moving and that none of those pieces of evidence will be present if it was not the case.

Explanation:

There are multiple pieces of evidence for the theory of plate tectonics. One of them is the fossil remains of organisms that lived in the past. While most of the fossils don't really offer any insight into the movement of the plates, a smaller part of them are the total opposite, providing perfect evidence that the plates are moving.

We are talking about fossils of a particular organism that can be found in several different continental masses That are far away from each other nowadays and don't have land-bridges between them. Such fossils are found in South America, Antarctica, Africa, and Australia, all of which are far away and have no land connection.

As it can easily be seen in nature, two exactly the same species with different backgrounds can not be found anywhere, as every organism is unique. Also, if a single species lives in several different regions with different living conditions and there is a natural barrier to isolate reproductive populations, a divergence occurs, so multiple different species evolve in accordance with the environment. Basically, a species that is found on several continents proves that those continents were merged, representing a single ecosystem in which that organism thrived.

Unscramble the definition below to describe what the greenhouse effect is: Sun's that gases the air way the energy in and increases trap the the of the Earth The temperature

Answers

Explanation:

The greenhouse effect is a process that occurs when gases in Earth's atmosphere trap the Sun's energy. This process increases the Earth temperature than it would be without an atmosphere.

Which BEST explains the effect the collapse of the Soviet Union had on Eastern Europe?

Democracy spread throughout the region.

Conflicts decreased among groups in the region.

The government began to control the means of production.

The nations of the region became more tightly integrated.


ANSWERS

I only

III only

I and II

III and IV

I, II, and III

Answers

Answer:

A. Democracy spread throughout the region

Explanation:

After the collapse of the Soviet Union, Eastern Europe had slowly integrated a democratic government. This however does not mean it was perfect, most of them are corrupted but even Russia had declared itself a Republic after the end of the Communist Regime.

explain any seven sources of income from biodiversity. ​

Answers

protection of water sources
soils formation and protection
nutrient storage and recycling
pollution breakdown and absorption
contribution to climate stability
maintenance of ecosystems
recovery from unpredictable events

Background

Each Species has a Role

Biodiversity is “the variability among living organisms from all sources including terrestrial, marine and other aquatic ecosystems, and the ecological complexes of which they are part; this includes diversity within species, between species, and of ecosystems.” It is the foundation of life on Earth. - International Union for Conservation of Nature, (About Biodiversity, http://iucn.org/what/tpas/biodiversity/about at 11/14/2011)

Each species has a specific niche, a specific role and function in an ecosystem. These roles include capturing and storing energy, providing food, predation, decomposing organic matter, cycling water and nutrients, controlling erosion, controlling pests and climate regulation.

what is a good example of continentality in Europe?
A.alps
B.siberia
C.appenines
D.northern europe plain

Answers

Answer:

D. Northern Europe plain

Explanation:

What mountains are covered in snow year round?

Answers

Answer:

The Alps.

Explanation:

Answer: The Alps is one mountain covered all year round in Europe.

Explanation:

Remote sensing would be helpful in finding information on which of the following?

A. The population density in Madrid

B. Housing patterns in Italy

C. Cancer rates in Singapore

D. The number of rivers in China

E. Education levels in Germany

Answers

Answer:

A

Explanation:

There are 5 clues, what country are they describing?​

Answers

Answer:

Pretty sure its France.

Explanation:

seine river runs through France

In finland , during what season does the weather get cool and wet?

Answers

Answer:

Finnish winters are snowy, wet, and cold. Lapland experiences snowy conditions from October through May, while southern Finland is a bit more mild, experiencing four to five months of winter. Despite the weather, winter is one of the most popular times to visit Finland.

Explanation:

Hoped I helped you!!

3 The melting of the ice sheet —

A allowed migrants to cross Canada on foot
B prevented migration across Beringia
C ended the coastal migration
D had no special impact on migration

Answers

ended the coastal migration

Explain the impacts of climate change.

Answers

Answer:

Results in global warming

Explain why there are differences between British & American English

Answers

Answer:

Aside from spelling and vocabulary, there are certain grammar differences between British and American English. For instance, in American English, collective nouns are considered singular (e.g. The band is playing). ... 'Needn't', which is commonly used in British English, is rarely, if at all used in American English.

Describe in detail the general climate of the Grand Canyon

Answers

This weather variety includes cold winters and mild pleasant summers, moderate humidity, and considerable diurnal temperature changes at the higher elevations, with hot and drier summers at the bottom of the Grand Canyon along with cool damp winters.

Why is Europe's clean energy sources important to the region?

Answers

Answer:

as it reduces green house gases and it also reduces the importation of fossil fuels from other countries

what country has not experienced balkanization?
A.yugoslavia
B.norway
C.czechoslovakia
D.USSR

Answers

I believe it is Yugoslavia

2. True or false. Weather forcasting is the analysis of scientific data to understand previous weather conditions. A. true B. false​

Answers

Answer:

False

Explanation:

A weather FOREcast is the prediction of weather beFORE it comes. When you  hear the 7 day forecast on the news, they are predicting the temperatures and precipitation and other natural things that happen.

Answer:

false

may be this will help you

The origins of the theory of plate tectonics began when German scientist, Alfred Wegener, proposed the idea of a)superposition b)continetal drift c) natural selection d) paleomagnetic reversals

Answers

Answer:

b

continental drift

Explanation:

..........

Answer:

b) continental drift

Explanation:

i just took the test on USA test prep

Hawaiian volcanoes produce two types of the same variety of lava. Pahoehoe is smooth and ropy; aa is chunky. Formulate a hypothesis as to why the same lava can have two different appearances.

Answers

Answer:

I will explain.

Explanation:

Lava comes in two primary appearances: Pahoehoe and aa. The reason why they have two different types of appearances is because the older aa in the photo has weathered and the iron in it has oxided somewhat, giving it a reddish and chunky appearance. It also moves fast. Pahoehoe has a flow that is comparatively smooth or a "ropy" surface. Pahoehoe doesn't have the chunky appearance.

the weight of a piece of stone when fully immersed in water is 18N and it displaces 4N of water. what is the weight of the stone in air?​

Answers

Answer:

4N

Explanation:

From the problem statement, the weight of the piece of stone when fully immersed in water is 18N

The stone displaces water with the weight of 4N;

 So, the weight of the stone in air is 4N.

From Archimedes principle, we know that the weight of the water displaced when an object is placed in a liquid is the weight of the object. This method is often used to determine the weight of objects that are irregularly shaped. The weight of a regular body  can be easily determined. But for irregular bodies, immersion in a liquid is a good approximation.

Which theory of geopolitics related the state to a living being that needed nourishment in order to survive?
a. Heartland Theory
b. World Systems Theory
c. Rimland Theory
d. Domino Theory
e. Organic Theory

Answers

I think it’s c or e I’m not sure I tried

What is Central Place Theory? And don't even dare to copy n paste something from goo.gle.

Answers

⭐hello my Friend

Central Place Theory states that the development and growth of urban areas depends on the type of service provided to their surroundings, that is, the market areas of each urban agglomeration.

⭐have good studies!

☝️follow the rules of brainly!

Answer:

Central place theory is a geographical theory that seeks to explain the number, size and location of human settlements in a residential system

Explanation:

Yes I copy pasted who the heck knows this on the top of their head

The equator is at what degree latitude?
O 10
O 15
O0

Answers

Answer: The equator is at 0 degrees latitude

Explanation:

You know when you see a picture of the earth with the criss-crossing lines, representing longitude and latitude? Well, the horizontal lines stand for longitude and the vertical ones stand for latitude. Each horizontal line measures one degree north or south of the equator and each vertical line represents east or west. The horizontal line in the very middle of the globe is the equator, and that line is 0 degrees latitude.

that's a long, confusing explanation, but I hope it helps!

how pre modern industry deffer from modern industry​

Answers

Answer:

Pre-modern Industries: are textile works, bamboo works, wood works, desho and iron & gold smithies. ... For example, in Bumthang, parts of Mangde valley and in the high altitude settlements, like Merak, Sakteng, Dur, Busa and Sephu, people raised sheep and so they were engaged in woolen textile production

Modern Industries is a diversified products and services company engaged in manufacturing, product design and build, thermal processing, and laboratory testing for a world-wide customer base. We make the parts that industry needs to build their products, with Precision Machining Services.

Explanation:

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Help plz someone? Help!!!! Assume that Chris and Heather get married in 2019 and file a joint return. What is their taxable income and income tax Please explain how you solved this!! I really need help!!Jada walks up to a tank of water that can hold up to 12 gallons. When it is active, a drain empties water from the tank at a constant rate. When Jada first sees the tank, it contains 8 gallons of water. Four minutes later, the tank contains 5 gallons of water.A) At what rate is the amount of water in the tank changing? Use a signed number, and include the unit of measurement in your answer.B) How many more minutes will it take for the tank to drain completely? Explain or show your reasoning.C) How many minutes before Jada arrived was the water tank completely full? Explain or show your reasoning. Heyy hellp mee please +_+ Read this paragraph from the article "The Ancestors of our Domestic Dog," and think about how the main idea of the article is introduced.The seeming endless contrasts among breeds of dogs may make us hesitate to accept the conclusion that countless naturalists, beginning with Charles Darwin, have drawn: All domestic dogs are descended from a few wild forms--namely, wolves, jackals, and possibly dingos. How can this be? Cats, rabbits, bird, and guinea pigsall also domesticateddo not appear in such wide variety.What does the author do to help readers identify the main idea in his article?He suggests the main idea indirectly by listing examples and evidence.He repeats the main idea several times throughout the paragraph.He asks a question that the rest of the article will answer.He states the main idea directly in the first sentence of the paragraph. PLEASE HELP!!!!!! ENGLISH!!!! describe how the poem uses imagery about freedom, the lack of it, or the desire for it. The poem would be "The Weary Blues" Which statement best explains the influence of the English Bill of rights on the U.S government? 1. identify the coeffieceint: 6x + 19 Select the correct answer.Read the following excerpt from A Christmas Carol by Charles Dickens. In it, a business owner namedEbenezer Scrooge discusses the poor and working classes:"If they would rather die," said Scrooge, "they had better do it, and decrease the surpluspopulation."Think about what you have learned about various thinkers of the Industrial Revolution. Whose ideasare reflected in the excerpt?James WattO Adam SmithO Thomas MalthusO Robert Owen Use trigonometry to solve for x. Round to the nearest tenth. De dnde eres, Antonio? Shawn uses 45 N of force to stop the cart 27 meter from running his foot over. How much work does he do? what is 592 .962 rounded to the nearest tenth Which of the following Best defines history Which idea did Ptolemys model use to explain why the planets appeared to move backward as they moved in thier orbits Which one of the following do you think was the main winner and which was the main loser in the Glorious Revolution? Use evidence from the article to back up your choice. A. Monarchy B. Parliament C. Church of England D. Protestant Dissenters E. Catholics Which of the below is evidence that photosynthesis is a chemical change? There is a change in shape of plant leaves.New solids and gases are formed, including sugar and oxygen.There is a change in the state of matter because water evaporates.(This is 7th grade science). please help Order the numbers from least to greatest. Show your work. 19/25, -0.33, 68%, -14/20, 50% PLS help me Ill do anything Im about to cry Ill mark brainliest Sulphur and Magnesium are separately burnt in air. Name the products formed. When these products are dissolved in water and the solutions obtained are tested with litmus, what will be the result? Why?